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Rodgers stood out early in his high school career outside Orlando, FL as a regular on the showcase circuit who was often the best player on the field at high profile events while also being the youngest. He had mostly solid average tools and good feel through the middle of his prep career. Then in his senior year, the arm strength, raw power, and bat speed all became plus, and he was the odds on favorite to go first overall. But Dansby Swanson, Alex Bregman, Andrew Benintendi, and fellow Florida prep hitter Kyle Tucker all took steps forward in the spring, and the Rockies were able to get Rodgers third overall.

In pro ball, Rodgers has benefitted form the Rockies’ affiliates being extreme hitters’ environments, which has mostly obscured in the surface stats the fact that his pitch selection is below average. It improved a bit in his second taste of Double-A in 2018, then became an issue again in his late-season promotion to Triple-A. He’s fringy at shortstop and as a runner, so most scouts see him sliding over to second base long-term, but he’s good enough to play shortstop everyday if a club doesn’t have better options and focuses on shifting and positioning around him. There’s enough here that it’s likely Rodgers is a solid everyday player of some sort in 2020, but he may not be the star that some have anticipated.

Hampson was a star at Long Beach State and a mainstay on the Team USA collegiate national team. Scouts doubted he’d stay at shortstop and were worried he wouldn’t have enough power to play second base, which is largely why Hampson fell to the third round of his draft despite three years of strong performance.

He’s hit for more power in pro ball than he ever did in college, probably because Long Beach’s marine layer makes it more difficult to hit for power there, and also because the Rockies affiliates are all launching pads. It’s hard to conclude that Hampson’s minor league power output (.457 SLG, mostly via doubles and triples) won’t continue because his future home is going to be Coors Field. He has also stolen way more bases as a pro than he did in college, peaking with 51 steals in 2017, and 38 last year. Rockies prospects are encouraged to run, but Hampson is indeed a 70 runner and will add value on big league basepaths. Though it’s unclear what the Rockies will do about the Daniel Murphy–Ian Desmond–Ryan McMahon logjam that spills over into second base (not to mention Brendan Rodgers’ recent call-up), Hampson seems like a good bet to be a solid everyday player for someone.

Like clockwork, Lambert has taken his turn in a Rockies minor league rotation every fifth (or sixth, or seventh, depending on off days) day since he signed. He’s also a robotic strike-thrower and has walked just 5% of hitters he has faced as a pro. Lambert has basically been this way since high school, when he was just too advanced, even for SoCal high schoolers. Nothing he throws is plus, though you could argue that the fastball is due to its odd approach angle. It sits in the mid-90s and lives in the top part of the strike zone, riding in on the hands of righties. His changeup is average, flashing above, and Lambert has long deployed it with veteran cunning, and he’ll run it back onto the glove-side corner of the plate for looking strikes.

He’s a hyper-efficient strike-thrower with a four-pitch mix, a high-probability fourth starter with little likely upside beyond that.

Rolison was a big name out of high school, reportedly turning down seven figures to go to Ole Miss knowing he would be an eligible sophomore due to his age. He had an up-and-down sophomore spring. Rolison came out of the chute blazing hot and had top-10 pick buzz for the first month of the season, then slowly regressed. Scouts thought he needed a delivery adjustment in to make him more direct to the plate, a way to improve his fastball control. They also thought he was too reliant on his curveball. To that point, hitters late in the season would sit on the pitch, knowing he had trouble locating his fastball and that he barely threw his changeup. It led to some bad outings, including one at South Carolina where he allowed 11 runs.

Since being drafted, Rolison has worked more frequently with all three of his pitches, throwing 66% of his pitches for strikes, and his velocity has remained in the 92-94 range even as he throws every fifth day (mostly) rather than once a week. He could end up with three above-average pitches and be a No. 4 or No. 4/5 starter.

The caveat surrounding amateur prospects like the one Welker was — big-bodied, risk of first base-only, limited power projection — is that they need to hit all the way up the minor league ladder for teams to value them, and Welker has done exactly that. He’s a .333 career hitter and has above-average raw power that manifests itself as doubles, largely because Welker is a free swinger who relies on his feel to hit to make contact rather than hunting pitches he can drive. He remains a tenuous bet to stay at third base, at best projecting as a 50 glove there for some teams, while he’s below average in our estimation. He’s a college-aged hitter performing at Double-A, and is a summer top 100 candidate if a majority of teams start to consider him a viable third baseman.

Vilade has not developed as expected to this point. We anticipated he’d move quickly to third base in pro ball, but hit for enough power to overcome it. Instead, he has held serve a shortstop and only just begun to see time at third, but has struggled to get to his considerable raw power in games. His lower half usage has improved, but Vilade’s bat still has downward entry into the hitting zone and he doesn’t extend well through contact. He has a nearly 50% groundball rate as a pro and ends up pushing a lot of contact the other way. There’s ceiling here because of Vilade’s shot to stay at short and adjust his way into game power, but there’s a low floor if he moves to third and can’t make tweaks.

It’s hard to find scouts and teams who are all in on Nevin because a) he’s been hurt a lot and b) he profiles as a hit-over-power first baseman. Lean but big-framed, Nevin lacks the lateral agility to be anything more than a 40 or 45 defender at third base. We’ve seen him hit oppo homers but it comes from quality, barreled contact rather than raw strength and power. It’s an atypical offensive recipe for a first base prospect, and it’s rare for contact-centric first baseman to work out, especially when they hit right-handed. Teams have him evaluated as a corner infield tweener who either hits enough to be a regular or ends up on a bench.

After he looked just okay against his elite peers on the summer showcase circuit, Lavigne generated a ton of buzz as a senior the following spring. Northeast popup high schoolers have a dubious track record because they spend all spring mashing bad high school pitching, but lots of teams were in on Lavigne’s spike in power and thought he fit in the second tier of high school hitting prospects in the draft behind the likes of Nolan Gorman and Jarred Kelenic.

Lavigne has not shown that kind of power with the wooden bats in pro ball and his exit velos are actually a bit below big league average, though that’s less worrisome considering his age. He’s a first base-only defender and needs to absolutely mash to profile. We’re cautiously optimistic that he can do it, but he’s out of the gate a little slower than we anticipated.

Vavra had a statistical breakout during his junior year at Minnesota — .386/.455/.614 with 10 homers, everything way up from his sophomore year — and ended up going on the high end of the third to fifth round range in which teams were considering him. He’s a patient hitter with an athletic swing who gets the most out of his slight build without often compromising his feel for contact. One source we spoke with thinks his swing is kind of grooved, but everyone else thinks he’s going to hit, have doubles power, and reach base at an above-average clip. That could play everyday if Vavra sticks at either shortstop or second base, which is where he’s seen time thus far in pro ball, but amateur evaluators thought he may ultimately end up at third base. A realistic outcome, should he shift to third, is that of a versatile lefty utility bat, but Vavra has a shot to be an everyday player.

At times Castellani looks like a mid-rotation starter, and at others he’s too wild to be effective. His tailing low-90s fastball has movement that mimics that of his well-located changeups, and Castellani’s slider has good length and bite away from right-handed hitters. He could garner whiffs with any of those pitches throughout a start. He doesn’t often get into counts where the changeup can be used, and he’s more likely to work back into counts with breaking stuff, often with his curveball.

It is not enough to say that Pint is having issues with control. Even pitchers walking guys at a 10% clip or worse face legitimate questions about their ability to start, and sometimes their ability to pitch in the big leagues at all. Pint is walking more than 30% of the hitters he faces right now, and has been moved to the Low-A bullpen. He simply can’t be a big leaguer with this kind of wildness, but his stuff remains incredible, among the best in the minors.

Through these struggles, Pint has continued to throw in the upper-90s with one of the harder power curveballs on the planet. He has top of the rotation stuff, but even those in amateur scouting who thought his delivery was too violent to repeat (which would make it tough to start) did not think Pint’s strike-throwing issues would be this much of a problem. We’d still take him ahead of relief-only types in this class because the stuff is so good, teams felt good about his makeup before the draft, and Pint is still pretty young. With time, he’s pretty likely to figure something out, though it’s suddenly very likely to be in some kind of bullpen role.

Carreras’ swing needs work. His stride and bat path both have problems, but he swings hard and has promising hand-eye coordination and bat control despite his current issues. Additionally, Carreras has a lean, projectable frame, he’s a plus runner and athletic infield defender who already has experience at multiple positions, and he has above-average bat speed. Some of the mechanical components in the batters box will need to improve, but the raw material here is exciting. Most players this age are older high school or junior college draft prospects. Measured against amateur players his age, Carreras would probably go in the top 50 picks.

Olivarez has had trouble throwing strikes during at least a few of his Extended starts, but he has enviable stuff and physical projection for a teenage lefty. He’s been sitting in the mid-90s this spring and will flash the occasional plus curveball, though the curve has so much velocity separation from the heater that it may be easy for upper-level hitters to lay off. Though he has an ideal frame and his delivery has a beautiful finish, with his rear leg flying up toward the sky à la Cole Hamels as Olivarez follows through, he doesn’t repeat yet, and his control is quite rough as a result. There’s a sizable developmental gap between where Olivarez is now and where he’d need to be to profile as a starting pitching prospect, but he’s young and has traits (velo, spin, frame) coveted in this age group.

Fernandez is purported to have been one of Texas’ PTBNL options in the Jonathan Lucroy trade, and he’s outhit Pedro Gonzalez (whom the Rangers ended up taking) to this point, to the tune of a .275/.365/.520 career line. He’s performed up through Double-A, albeit as a slightly old-for-the-level prospect and in hitter-friendly environs. Fernandez strikes out a lot and he only fits in left field, but he is the youngest and most impressive statistical performer of a large group of lefty outfield power hitters in this system. They all realistically project as the larger half of a corner platoon.

Eusebio had a breakout 2017, then blew out his elbow early in 2018. He’s back throwing bullpens as this list goes to publication. The flashes of brilliance he showed during 2017 Extended indicated a potential No. 4 starter future, as Eusebio’s fastball would creep into the mid-90s and he’d show you a good change and breaking ball. He casts a lot of his pitches to his arm side and mechanical consistency and command are the biggest parts of his development, as he’ll need to improve in that area to remain a starter. Of course, that’s assuming his pre-surgery stuff returns.

Tinoco has taken his four-pitch mix to the bullpen. His fastball is hard and comes in at a very tough angle while his slider and curveball each flash plus, though they’re sometimes (especially the curve) easy to identify out of his hand, and he doesn’t miss as many bats as is typical for someone with this kind of power stuff. Tinoco has had some injury issues, but the relief role may help keep him healthier moving forward. He should debut at some point this season.

Almonte has moved to the bullpen and upped the usage of his mid-90s fastball and above-average slider. He’s a big league-ready relief piece.

He’s quite little, but Palma is an athletic backstop with catch and throw skills, as well as advanced feel for contact. He’s twitchy and mobile, which bodes well for his ball-blocking future, and he’s a fine receiver and pitch framer already, though he hasn’t caught a lot of big league-quality stuff yet. It’s possible the physical grind of catching will take an outsized toll on Palma’s little body and he won’t hit enough to be anything, but on tools, at the very least, he looks like a good backup catching prospect.

Feltner spent a chunk of his college career in the bullpen, and he projects in a big league relief role for most pro teams. His arm action is quite long, and while he can bully hitters with his fastball in the zone, he lacks precise command of his stuff. Feltner throws hard, though, and his changeup has big time arm side movement. It’s going to miss big league bats, but an average, slurvy breaking ball likely won’t be able to unless he can start to put it where he wants to more exactly. Unlike most of the other pitching prospects in this system, Feltner hasn’t had a myriad of injury issues and is still being developed as a starter.

Fuentes is a 3B/1B with plus power and some swing and miss issues, problems that will likely relegate him to bench/platoon duty in the big leagues.

The Rockies made Doyle their second consecutive second round college reliever in 2017 and after his velocity was way down just after his draft, he has since been as advertised. Mid-90s fastball, plus slider, a typical middle relief fit. He’s on pace to help the Rockies bullpen next year.

Some teams thought Bowden had been buried by the pitching depth at Vanderbilt and might be able to start in pro ball. A second round pick and $1.6 million bonus were indicators that the Rockies might be one of them but, perhaps in part due to injury, he’s only pitched in relief as a pro. He has a mid-90s sinker and plus changeup, which should enable him to pitch in middle relief.

Tyler has a long arm action and he’s had injury issues dating back to college, but he throws in the mid-90s and has a plus changeup, so he’s likely to be a solid reliever.

Of all the players signed during the 2017 July 2 span, Cruz had the most promising feel to hit. He’s a lefty infield bat with natural feel for lift, a projectable frame, and a good chance of staying at second base, though he’ll probably only be okay there.

Lots of Rockies prospects are two-year DSL guys by virtue of the fact that the Rockies have no AZL team, but Tovar is so physically immature that he’d probably be of that ilk anyway. He does have some feel to hit from both sides of the plate and his swing has some natural lift when he’s swinging left-handed, but he’d have to get much stronger for that to matter at all. He has plus hands and infield footwork and will likely grow into enough arm strength for the left side. It’ll likely be a long time before he’s anything at all, and he may end up as a utility infielder at best, but switch-hitting middle infield fits typically find big league roles.

Diaz is the first Cuban amateur ever signed by Colorado. He’s an athletic, instinctive middle infield prospect with modest physical projection and promising bat to ball skills. He has all-fields feel for contact and will likely be a hit-over-power offensive player by a good margin. He’s seen action all over the infield but the bat might only profile at shortstop in an everyday capacity. He’s more likely a utility type.

Lawrence is a side-armer with a tailing, upper-90s fastball and sweeping slider. It’s late-inning stuff, but too often Lawrence struggles with control and pitch execution. It needs to improve if he’s to lock down a big league bullpen role at all, but there’s ceiling here due to the stuff.

Few infielders in the minors have Jazz’s bat speed, and even fewer have his swagger and flare. Though his high-effort hacks detract from his ability to make contact, Chisholm has shocking power for someone his size. When he really cuts it loose (which is often), he rotates with a violence and explosion reminiscent of Javier Baez and, like Baez, Chisholm is a high-risk prospect whose all-or-nothing style of hitting might ultimately be his undoing.

He has a one-note approach that mostly consists of him trying to ambush first-pitch fastballs. He’ll take some ugly swings when he’s cheating on a heater and instead gets something offspeed, though he has the bat control to put these balls in play if they’re near the zone. His strikeout rate (29% for his career) in undoubtedly a red flag, but because Chisholm is such a clean fit at shortstop (plus range, actions, and arm), he has some wiggle room on the offensive side, and shortstops with this kind of pop don’t exactly grow on trees. There’s star ceiling here, but also volcanic instability.

The list of catchers with speed comparable to Varsho’s is pretty short. J.T. Realmuto and Jorge Alfaro are two current examples, but Varsho reaches a top speed faster than either of them, and is an actual threat to steal bases. He’s also a doubles machine with natural feel for gap-to-gap contact, and if soft liners trickle between outfielders, Varsho can turn those into hustle doubles.

He remains a below-average receiver and often has trouble firmly squeezing balls in his glove, at times struggling to block breaking stuff in the dirt. Because Varsho is an above-average athlete, most scouts think these aspects of catching will become viable in time and that Varsho may just be behind in this regard due to his cold weather, small school background. His fringe arm strength plays up on scouts’ stopwatches because he’s very quick out of his crouch, so Dbacks games won’t turn into track meets with him behind the plate. He has a good chance to be an offensive-minded, everyday catcher.

Duplantier had been injury free since college (when he dealt with shoulder problems), until 2018, when he had hamstring issues in the spring, and biceps tendinitis later in the summer. The lost innings resulted in an Arizona Fall League stint, during which Duplantier was arguably the best non-Whitley pitching prospect who was a lock to start. Despite the biceps issue, his velocity was fine in the fall. Duplantier sits 93-96 and makes heavy use of three good secondary pitches. The horizontal action on his slider only plays away from righties, but the curveball and changeup will help mitigate some of those issues, as well as the platoon issues that may arise from Duplantier’s lower arm slot.

He doesn’t throw especially hard but the baseball appears to explode out of Widener’s hand, and it often gets on hitters much quicker than they’re expecting. Acquired in that massive, three-team, Steven Souza deal, Widener is a curvaceous 6-foot righty with several above-average pitches and average command. Much of the industry thought he was a reliever coming out of college, but the Yankees and Dbacks bought in on Widener as a starter, and they appear to have been correct.

The 2018 extended spring rehab group at Salt River Fields often included Jake Lamb and Steven Souza. Robinson, still 17 at the time, was just as big as both of them and about as fast as Souza, who is a 60 runner underway. Robinson is a Bahamian man-child, built like an SEC wide receiver and about as fast once he really gets going. He performed fairly well in his first pro season and was pushed to the Pioneer League late in the summer.

He has some swing and miss issues, and his bat path needs some work to get to all the power that’s coming, but the foundation for a combination of contact and power is present. It’s unlikely that Robinson stays in center field forever, and he may even need to move to right while he’s still in the minors, but the power that comes with all that good weight could approach the top of the scale. He’s a high risk, high upside teenage power-hitting prospect.

Perdomo is among the most advanced switch-hitting teenagers on the planet, possessing innate feel for contact from both sides of the plate despite what can sometimes be an awkward-looking swing. As of list publication, he has a plus-plus walk rate over about 150 pro plate appearances, enough to be confident that he has value-adding feel for the strike zone. Not only that, but he is a potential 55 or 60 glove at short. Already procedurally advanced, Perdomo will likely get quicker and more explosive as his body matures, but his frame is not so large that he projects to third base; he’s a high-probability middle infielder.

The quality of Perdomo’s contact may eventually result in power output beyond his raw grade; he’ll be a star if that happens. If not, a defensive asset at short with a plus bat and excellent ball/strike recognition is still an everyday player.

Pre-draft questions about Thomas focused on his physicality, or lack thereof, despite his long track record of hitting against elite competition at amateur showcase events around the country. He’s well-conditioned, but short, built narrowly, and likely to max out with a frame similar to Brett Gardner’s. And Thomas projects to have a similar skillset. It’s rare that a high school hitter from Chicago is this polished, especially one as young as Thomas, who was barely 18 on draft day.

He runs well enough to project in center field (though his reads from the corners are much better right now and he might just be a plus corner glove, also like Gardner), which makes the unenthusiastic, frame-based power projection less concerning. There’s some tweener fourth outfielder risk here because of the lack of power projection and potential move off of center field, but it’s reasonable to hope some combination of contact, on base ability, and defense make up for that and enable Thomas to be a regular.

Signed for $1.85 million last July, Guzman has yet to set foot on a baseball field in the U.S., but he’s already one of the most exciting players in this system. He has a rare combination of speed, frame, and swing foundation, a triumvirate that gives Guzman a chance to be a five-tool star, something most prospects simply don’t have a chance to become.

He has a loose, whippy swing that he doesn’t always control, and had among the best straightline speed in the 2018 July 2 class. The footspeed makes Guzman a rangy outfield defender and likely to stay in center. His hands have enough life in the box that he might do offensive damage, too. We have no data on important aspects of Guzman’s ultimate profile, making him as risky a prospect as he is skilled. He may not come stateside until this fall for instructional league, unless he so convincingly dominates the DSL that Arizona is compelled to promote him.

Teams with Extended Spring coverage in Arizona were split as to which of the two Dbacks shortstop prospects they preferred until Geraldo Perdomo separated himself with his summer performance. Some teams were early Peguero advocates, citing his age, superior athleticism, and a build comparable to a young Jean Segura’s.

Like most of Arizona’s teenage shortstop prospects, Peguero earned a late-summer promotion with early-season performance, slashing .309/.356/.457 in the DSL. His swing is shorter than a mid-inning station identification and he takes good at-bats for someone his age, so there’s big ceiling on the hit tool if his timing at the plate improves. He’s also a rangy defender with a plus arm and at least average hands. He can go into the hole, backhand a ball, plant, and hose runners. The frame isn’t favorable for power projection, but Peguero’s hands are so quick that he might be able to pull and lift enough balls to actually produce some homers. His swing is not currently geared for that type of contact, though. Regardless, the bat and defensive ability is promising, as is the frame and athletic ability. He has everyday shortstop upside.

Tabor’s velocity seems to have plateaued after it exploded as his wiry frame filled out later in high school. He’s sitting in the low-90s, with a breaking ball and changeup that each flash above average. He’s athletic, his arm slot creates rise on his fastball and bat-missing, vertical action on his breaking stuff, and Tabor has unusually good feel for his changeup, especially for a northeast prep arm. It looks like he’s going to move along developmentally with the advanced teenagers from last year’s rookie-ball group. He’s the best long-term pitching prospect in this system, and has a chance to be a No. 4 starter if the velo finds another gear, more likely a No. 4/5 if it does not.

Alexander fell out of the top 10 rounds of last year’s draft due to questions about his signability, hit tool, and age relative to his peers. He was almost 19 on draft day, which, combined with the strikeout issues, moved him way down the boards of teams who care about those variables, especially together. He ended up signing for a very reasonable $500,000, then hit .362 against AZL pitching and was eventually promoted to the Pioneer League.

He’s an advanced defender with an 80 arm (the teams most bearish on his bat in high school wanted to see him on the mound) and above-average raw power, which Alexander’s pre-daft proponents insisted he’d get to despite the strikeouts. We don’t know much about the plate discipline aspect of the profile yet. The low end of the spectrum makes the offensive skillset read like Tim Beckham’s, but Alexander projects as a better defender.

McCarthy’s older brother Joe was a hyped prospect who slid on draft day due to a down spring stemming from a back issue. Jake also missed most of his draft spring, but with a broken wrist. He returned not long before the draft and did not look very good, and teams had mixed opinions about him on draft day. Some thought he just needed more time to get back to full strength and speed, while others were scared off by their post-injury looks, which were so bad that multiple scouts told us they thought he may have been better off sitting out rather than giving teams a bad look just before the draft.

At his best, McCarthy shows at least average raw power, plus speed, some feel to hit, and is a center field fit. His swing is naturally geared for opposite field contact, which will likely cap his power output unless he undergoes a swing change. That will be less necessary if McCarthy stays in center field. Season-long failure to hit in the Cal League will leave us with more questions about McCarthy than we had entering the year, especially if his early-season struggles with strikeouts persist.

There are lots of different ways to frame arguments about Leyba. On the one hand, he’s a switch-hitting middle infielder who has made lots of contact — Leyba is a .285 career hitter — over six pro seasons. On the other, he has been hurt a lot — shoulder surgery, most recently — and may be painted into too small a defensive corner to be rosterable if he doesn’t hit enough to be a regular. It’s important to be mindful of prospect fatigue creeping in here, as Leyba really broke out during the summer of 2014 when as a teenager, he hit a combined .323 in the Penn and Midwest Leagues. He was sent to Arizona as part of the three-way, Didi Gregorius-headlined trade that offseason, had a bad 2015 in the Cal League, bounced back in 2016, and has basically been hurt since.

Because of Leyba’s size and lack of power, he has to keep making high-end rates of contact to profile as an everyday player. If he lacks sufficient arm strength for shortstop coming out of the shoulder surgery, it puts even more pressure on the hit tool, because a bench role is less feasible for someone without defensive versatility.

Middle infielders with power are rare and yet Young, who is exactly that, somehow lasted until the 37th round of his draft and signed for just $3,000. This is the Cardinals’ archetypical draftee — a power-first prospect with questionable mobility. Collect enough of these and, through a combination of luck and good player development, some of them will turn into passable defenders and become solid big leaguers or tradable assets like Young, who was sent to Arizona in the Paul Goldschmidt deal.

Though he does most of his damage on pitches on the inner half, Young has enough barrel control to spoil pitches away from him until he gets something he can square up. When Young connects, he does so with power. Buff and square-shouldered, Young’s physicality is a driving component of his power but it’s also why he’s somewhat limited defensively. Young has seen time at shortstop, third base, and left field as a pro but was mostly kept at second base in 2018. He should be a passable defender there, but his lack of defensive versatility could be a barrier to a call-up unless he hits enough to be an everyday player. He’s a realistic internal candidate to play the kind of role Wilmer Flores is currently playing on Arizona’s active roster.

Toolsy and physical, Patino has an exciting combination of speed and power, as well as promising ball/strike recognition. What he appears to lack at this point is barrel control and a bat path that enables the power. Those are important components and may not be easy to fix, especially the bat control issue. But Patino’s ball/strike and breaking ball recognition could help mitigate those issues, and his ceiling (a high OBP center fielder with power) is lofty if they’re overcome. A max-effort player with a fairly mature build, Patino seems poised to have a strong statistical summer against AZL pitching and defenses, perhaps enough that he’ll see some Northwest League time late in the year.

At times, Frias looks like a stiff, velo-only bullpen prospect. At others, he’s competing in or near the zone with four pitches, including a splitter that got much better over the winter. All four pitches give hitters a vastly different look. Frias’ mid-90s fastball has tailing action, his curveball has vertical depth and eats up hitters who are cheating on velo, the split has late bottom when it’s on, and the slider has horizontal, cutting action. The movement profile of Frias’ fastball may not be the best for missing bats, but it’s likely to be an impact pitch because of the velocity. He could end up with three average secondaries (there’s a chance the split becomes better than that) and enough strikes to start, making him a potential No. 4/5 starter.

Green was a 14th round senior sign last year and like most senior signs, had 45/50 stuff in college. He was 90-94 with two average breaking balls and had little college experience because he didn’t move into the rotation until his senior season.

This spring, however, Green’s stuff was up. He was 92-95, touching 96, and flashing plus secondary stuff including a good changeup. The Dbacks may have found something here, though there’s no way to be sure if the velo uptick will hold water or not. He has No. 4 starter stuff if it does, and some scouts with Dbacks coverage this spring prefered Green to several more high-profile arms in the system. He’s currently on the IL with biceps tendinitis.

Clarke has a four-pitch mix that plays in part because of big extension. He has feel for locating his cutter (glove side) and change (arm side) better than he does for his other pitches, but his fastball sneaks up on hitters because of the extension, so Clarke has command margin for error in the strike zone. He’s a low-variance fifth starter prospect who should see significant big league time this season.

Lopez seems to have moved past a tumultuous first few chapters of his Dbacks tenure and settled into a seventh and eighth inning role. He blows upper-90s heat past hitters at the top of the zone and above it, and he generates flaccid swings at his slider when working away from righties. Once developed as a starter, the return of a third pitch might enable Lopez to be an elite reliever down the line, if he doesn’t already have high-leverage stuff. He’s under team control until 2025 and has unusually high trade value for a single-inning reliever, especially for teams unconcerned about his early issues.

Ellis has a very quiet, easy swing but somehow still generates plus power. He has middling pitch recognition, which sometimes causes him to mistime pitches. This manifests as lots of awkward or checked swings, but he doesn’t typically flail and whiff, and Ellis is strong enough that the contact has a chance to be meaningful even if he didn’t take a great cut. It’s a fair, power-over-hit corner profile that takes a hit if Ellis should ever need to move to first base. So far he’s been playable, but not impactful, at third.

Smith struck out just 12 times as a college junior and had 25 more walks than strikeouts during his entire UVA tenure. Pre-draft questions about his ability to hit for power in games have proven to be pertinent. But Smith hits and he walks, so a relevant swing change, even one that sacrifices some contact, could lead to a breakout here. After some early-season statistical indicators that one might be occurring, Smith’s groundball rate has regressed to the mean. He’s a speculative low-end regular at first base.

After a strong 2017, Diaz spent 2018 injured (twice) and unproductive. His physical tools remain the same; Diaz runs and throws well, and has above-average bat speed and power. While some of his 2018 swoon was a result of injury and the offensive environment in the Midwest League, some of his issues were also swing-related. He has to take big, long, full-armed hacks to generate that bat speed, and so he lacks elegant feel for the barrel. He’s playing both outfield corners now, not center. It makes the hit tool problems more of a concern, but ultimately, this is a college-aged hitter with tools that come off the board fairly early on day two.

Vargas’ delivery has a cadence that hitters seem able to time, but it’s graceful, athletic, and repeatable. He has burgeoning control of No. 4/5 starter stuff, led by a two-plane breaking ball that Vargas can locate in the zone and beneath consistently. He’s well built, throws pretty hard, and has performed up through Double-A, and he’s now on the 40-man. There’s a chance he sees his first big league time this season.

Ginkel’s velocity has exploded since college, and he now sits 93-96 with tough angle. He also has two good secondaries, a change and slider that both have late, downward movement. He’s a likely long-term bullpen piece.

Alvarez signed for $65,000 in 2017. Newly 18 and still fairly projectable, Alvarez has already touched 95 and is flashing a plus split. He has below-average breaking ball spin but sometimes creates good shape and depth on it. He’ll be measured against recently-drafted high school arms in this year’s AZL, and there are some pitchability and breaking ball questions that need answering, but the velo and splitter are promising.

Mercer was a max-effort 94-97 in college, had scattershot fastball command, and a plus changeup. His velo is down and neither of his two breaking balls has great movement. We think he’s a Tyler Clippard-style changeup reliever so long as the velocity returns.

Goddard was worked hard at Kansas, sometimes throwing around 120 pitches several starts in a row, and his velocity was down after last year’s draft. He’s a big-framed guy with average stuff that plays up due to extension and his fastball has life that competes in the strike zone. Realistically he’s a fifth or sixth starter but let’s see how the fastball plays and what happens to the velocity when Goddard is handled in a way that prioritizes development rather than winning Big 12 games.

Barrosa isn’t toolsy but he has good feel to hit from both sides of the plate and terrific defensive instincts in center field. He’s stout and not very projectable, but already looks like a potential bench out field type who can play all three spots and let you match up late in games.

Peacock has a heavy, mid-90s sinker that has enabled him to generate a 78% groundball rate this year. His slider has a 2800 rpm spin rate but visual evaluations of that pitch put it closer to average. His changeup moves and tails, but is often easy to identify out of his hand due to altered release/arm speed. On some level, Peacock is a one-pitch 25-year-old, but on another he has a dominant, grounder-inducing fastball and his secondaries have some characteristics that may just need to be refined for one or both of them to be effective.

Weiss is a four-pitch (maybe five — there may be both a slider and cutter) strike-thrower whose overhand, trebuchet delivery creates vertical action on most of his stuff. He may be a backend starter.

Holton blew out his elbow in his first 2018 start at Florida State and needed Tommy John. He was only throwing 87-90 before the injury but both his changeup and breaking ball were flashing plus. So long as his stuff comes back after surgery, he’ll probably carve the lower minors. There are some instances of velocity upticks coming out of Tommy John (Walker Buehler is a prominent recent example) and if Holton has one, he’ll rocket up this list.

Lewis got $125,000 in the 2018 12th round. He’s very tall, long, and is athletic for his size, and he has great changeup feel. He has below-average fastball velocity, but it plays up a few ticks because of extension, and Lewis doesn’t often make crushable mistakes. His slider is okay when it’s located, but the changeup is Lewis’ best swing and miss option against hitters of either handedness. He has sixth starter stuff on the surface, but there’s a chance that 6 or better command develops late (Lewis is already 23) because of Lewis’ size. If that happens, he’ll pitch in the back of a rotation.