The Seattle Mariners currently have one of baseball’s best farm systems, and its strength differs markedly from that of the big league roster. Pitching-rich at the major league level, it’s Mariners position player prospects who populate the top tier of our rankings. That’s welcome news — at least on paper — for a Seattle team that has recently excelled at keeping runs off the board, but has too often struggled to score.

Justin Toole is front and center in the organization’s quest to graduate productive bats into the parent club’s lineup. Brought on as director of player development following the 2022 season, the 38-year-old Council Bluffs, Iowa native has both the background and the acumen to help make that happen. Prior to coming to Seattle, Toole played seven professional seasons, then served four years as a minor league hitting coach, followed by three as a major league hitting analyst. All of his pre-Mariners experience came with Cleveland.

Toole discussed several of the system’s most promising prospects prior to heading to Arizona for the start of spring training.

———

David Laurila: What is the current strength of the system?

Justin Toole: “From a player development standpoint, I think the strength is the individuality with how we handle our players. When we get people into our system, we figure out their strengths, we figure out their weaknesses, we help them understand their identity. We work with our players to get a feel for where they think they are, and where they want to go.

“Our group has done an unbelievable job of creating good player plans that are clear, that are are easy to follow. They’re simple. I think that’s kind of been the strength of our player development group. Of course, any good player development group is going to be good because of the scouting group. They bring in good players, players that fit what we want to do, and who we want to be.” Read the rest of this entry »

Walker Jenkins is more than just the top-rated prospect in the Minnesota Twins system. Drafted fifth overall in 2023 out of Southport, North Carolina’s South Brunswick High School, the soon-to-turn-20-year-old is one of the game’s top prospects. His left-handed stroke is a big reason why. As Eric Longenhagen notes in Jenkins’ forthcoming Top 100 prospect report, the outfielder “has exciting feel to hit and barrel control. He tracks pitches exceptionally well and can move his hands all over the strike zone.” Longenhagen goes on to note that while Jenkins is likely a left fielder (the Twins have primarily deployed him in center so far), he “should hit enough to be a heart-of-the-order hitter and impact regular regardless of position.”

His first full professional season was impressive. In 368 plate appearances split across four levels — he finished the year in Double-A — Jenkins had a 139 wRC+ to go with six home runs and a .282/.394/.439 slash line. Moreover, he swiped 17 bases in 20 attempts.

Jenkins discussed his hitting approach in the final week of January.

———

David Laurila: How would you describe yourself as a hitter?

Walker Jenkins: “Above all things, I’m a hitter who is going to go up there and try to get my best swing off. You have guys that get categorized as, ‘Oh, they’re hitters, but they have no power,’ while for others it’s, ‘They’re all power, but no hit.’ I want to be a good hitter. I’m going to hit first, and when I get my A-swing off, that’s when my power is going to come.

“If you can continuously hit the ball on the barrel, good things are going to happen. That’s what I try to do, because I don’t like striking out. I don’t like giving at-bats away. But when I get in a hitter’s count, I’m not going to get cheated.” Read the rest of this entry »

Robert Hassell III has encountered bumps in the road, but he’s confident that he’s finally heading in the right direction. Health and a better understanding of his left-handed stroke are two reasons why. Added to the Washington Nationals’ 40-man roster over the offseason, the 2020 first-rounder — he went eighth overall to the San Diego Padres — is also still just 23 years old. While his path to the big leagues has been anything but smooth, Hassell is far from over the hill in terms of prospect status.

Injuries have hampered his progress. Since turning pro, Hassell has incurred a pair of wrist injuries, including a broken hamate bone, and strained a groin muscle. As a result, he’s played in just 428 games over four seasons. Seldom at full strength for an extended period of time, he’s slashed an uninspiring .260/.350/.385 with 36 home runs and a 105 wRC+.

Hassell didn’t want to dwell on his past injury issues when I spoke to him during the Arizona Fall League season, although he did acknowledge that he “needs to be healthy and on the field” in order to allow his true talent to play. And he definitely has talent. While power has never been part of his profile, Hassell’s combination of bat-to-ball skills, speed, and outfield defense helped make him a primary piece in the multi-player trade that sent Juan Soto from Washington to San Diego in August 2022.

The conversation I had with Hassell in Arizona centered on his development as a hitter — something he views as a work-in-progress in need of nuance, not one that requires an overhaul. Read the rest of this entry »

George Lombard Jr. is a promising prospect with a first-round pedigree. Drafted 26th overall in 2023 out of Gulliver Preparatory School in Pinecrest, Florida, the right-handed-hitting shortstop is also the son of former big league outfielder (and current Detroit Tigers bench coach) George Lombard. Assigned a 45 FV by lead prospect analyst Eric Longenhagen, the athletically gifted youngster is no. 4 on our recently released New York Yankees Top Prospects list.

The 19-year-old’s first full professional season was a mixed bag statistically. Over 497 plate appearances between Low-A Tampa and High-A Hudson Valley, Lombard logged a .231/.338/.334 slash line, a 99 wRC+, and 32 extra-base hits, five of which left the yard. Taking advantage of his plus wheels, he swiped 39 bases in 47 attempts.

Lombard discussed his game late in the 2024 season.

———

David Laurila: I’ve seen you listed at 6-foot-2, 190 pounds. How accurate is that, and where do you see yourself going forward?

George Lombard Jr: “I’m 6-foot-3 and around 205 pounds. I’ll put on some more weight in the next few years, and I think our goal will end up being around 215, maybe 220. We believe that I can still be fast as I put on weight, so we’re going to continue to do that. A lot of it will just come with physically maturing over time, and putting in the work in the weight room.” Read the rest of this entry »

Jared Koenig’s path to big-league success was anything but smooth. The southpaw didn’t throw his first pitch in affiliated baseball until he was 27 years old, that coming in the Oakland Athletics organization after three seasons on the indie-ball circuit. And while he made his MLB debut the following year, he appeared in just 10 games, logging a 5.72 ERA and losing three of four decision. That was in 2022. Subsequently signed by San Diego, he put up nothing-special numbers in Triple-A and was cut loose by the Padres midway through the 2023 campaign.

The Brewers gave him another opportunity. Milwaukee inked the 6-foot-5 left-hander to a contract prior to last season, and they’re certainly glad they did. Working primarily out of the bullpen — he served as an opener on six occasions — Koenig made 55 appearances for the NL Central champs, putting up a 2.47 ERA and a 3.28 FIP over 62 frames. Moreover, he was credited with nine wins and one save. Seemingly out of the blue, he’d come into his own as a 30-year-old rookie.

How he go from relative obscurity to providing quality innings for a playoff team? Read the rest of this entry »

Zach Dezenzo could play an important role for the Astros this year. The 24-year-old projects to be a “viable third baseman,” as Eric Longenhagen and Travis Ice wrote in Dezenzo’s prospect report in June, but depending on how Houston’s roster comes together — an Alex Bregman return remains a possibility — Dezenzo could also be used in left field. Indeed, at Astros FanFest on Saturday, manager Joe Espada said Dezenzo will get a lot of reps in left field during spring training.

Regardless of where he is stationed defensively, extra-base oomph will be the righty-hitting Dezenzo’s calling card. A 12th-round pick in 2022 out of Ohio State University, Dezenzo has 70-grade raw power that he is still learning to tap into in games (55 FV game power), according to our prospect team. Last season, he posted a 131 wRC+ between Double-A Corpus Christi and Triple-A Sugar Land. He made his big league debut in early August and was optioned a month later before getting called up again just before the end of the regular season. During his 19 major league games, he went deep twice while slashing .242/.277/.371 (84 wRC+) over 65 plate appearances.

Dezenzo discussed his development as a hitter when the Astros visited Fenway Park in August.

———

David Laurila: You didn’t get drafted your junior year, despite solid numbers [including a .933 OPS]. Why was that?

Zach Dezenzo: “Good question. I put together a pretty strong freshman season at Ohio State [in 2019] — freshman All-American honors — then the COVID season obviously got cut short. My junior year, I hit .302 with nine home runs, although we only played 42 games. I knew I was good, but I’m not sure that I did enough to raise many scouts’ attention. That’s probably kind of where I was at, needing one more year to show what I was truly capable of. But that’s OK. It all worked out perfectly fine.”

Laurila: You must have drawn some attention as a junior…

Dezenzo: “I did have some. The Astros were actually interested — they were probably the number one team in contact with me — so yes, there was definitely interest. It just didn’t pan out the way I wanted it to.”

Laurila: Jumping to your hitting profile, how does it now compare to when you signed? Are you mostly the same guy in the box? Read the rest of this entry »

Hunter Dobbins has emerged as one of the top pitching prospects in the Red Sox system. Selected in the eighth round of the 2021 draft out of Texas Tech University, the 25-year-old right-hander is coming off of a 2024 season in which he logged a 3.08 ERA and a 3.04 FIP over 125 2/3 innings between Double-A Portland and Triple-A Worcester. Assigned a 40+ FV grade by Eric Longenhagen after being added to Boston’s 40-man roster in November, Dobbins was called “a near-ready fifth starter prospect” by our lead prospect analyst back in July.

Dobbins discussed his repertoire and approach when the Red Sox held their annual Rookie Development Camp at Fenway Park earlier this month.

———

David Laurila: What have you most learned about pitching since getting to pro ball?

Hunter Dobbins: “I would say how to attack hitters. Every single year I’m learning how to follow our plan and execute that plan. I think I’ve taken a big step forward in that aspect. The pitch shapes are also getting a lot more consistent. Last year, a couple of my pitches would have almost two different movements. This year, I’m looking at having consistent movement so that I can go right at hitters. But overall, it’s more of the strategy side of things where I’ve learned the most.”

Laurila: How do you balance attacking weaknesses versus throwing your pitches where they tend to play best?

Dobbins: “I side more on sticking to my strengths. That said, I have five pitches. I have pitches that move in all different directions, so I’m going to take into account if a guy struggles on this half of the plate with pitches that move in this direction; I’m going to have a strength in that realm. But I’m also not going to shy away from something I know I can land, even if that is considered one of his strengths. I’m going to take my best ball versus his best swing and see what happens.”

Laurila: How many pitches did you have when you signed? Read the rest of this entry »

The Tampa Bay Rays have a reputation of getting the best out of previously undervalued pitchers, and Garrett Cleavinger is a prime example. Acquired from the Los Angeles Dodgers in August 2022 in exchange for German Tapia, the 30-year-old southpaw was subsequently limited to 12 games in 2023 due to a knee injury, but a breakout was right around the corner. Cleavinger made a career-high 68 appearances last year, logging a 3.75 ERA and a 26.7 strikeout rate over 60 relief innings. His ledger included seven wins and six saves.

A high-octane heater was one of his best weapons; at 96.3 mph, Cleavinger’s four-seamer ranked in the 84th percentile for velocity. With that in mind, I asked the Lawrence, Kansas native if he identifies as a power pitcher.

“It’s a part of my game,” Cleavinger told me at the close of the 2024 campaign. “I’m definitely not a pinpoint command guy like some pitchers are — I wish I was a little bit better in that aspect — but power stuff coming out of the pen does kind of fit the description for me.”

Possessor of a varied arsenal is another accurate description. The erstwhile University of Oregon closer now features five-pitches, only one of which he threw less than 10 percent of the time. Per Baseball Savant, the breakdown was: cutter 26.3%, four-seamer 24.8%, slider 22.0%, sweeper 17.4%, and two-seamer 9.5%. Two of those were recent additions. Read the rest of this entry »

Back in early October, Termarr Johnson self-assuredly told MLB Pipeline’s Jim Callis that he is continuing to work on being “the best hitter in the world.” The 20-year-old Pittsburgh Pirates prospect didn’t put it quite that way when I spoke to him days later, but he did exude determination and confidence when addressing his craft. That’s understandable. Drafted fourth overall in 2022 out of Atlanta’s Mays High School, Johnson remains a high-ceiling hitter, albeit one whose developmental path hasn’t been as smooth as many had anticipated.

His 2024 season included both stumbles and strides. The 5-foot-7, 190-pound middle infielder logged a solid 121 wRC+ between High-A Greensboro (487 plate appearances) and Double-A Altoona (57), but as our lead prospect analyst Eric Longenhagen wrote last summer, Johnson’s “underlying contact data is pretty concerning.” Moreover, while his 15 home runs were indicative of plus power potential, the accompanying .386 slugging percentage was a bit underwhelming. Johnson’s left-handed stroke is unquestionably capable of causing damage, but further fine-tuning is needed before that can happen at the big league level.

Johnson discussed his approach to hitting shortly after the start of the Arizona Fall League season.

———

David Laurila: You’re still just 20 years old. Do you feel that you’ve settled into your identity as a hitter?

Termarr Johnson: “For sure. I feel like I have a pretty good swing, and I hit the ball hard pretty often, so I’m just trying to keep a good approach and bring the pitcher to me. I feel like that puts me in the best position possible. And to be honest with you, I’m a different hitter every at-bat. I’m a different hitter based on… like, every pitcher is different. Every pitch is different. Every situation is different. I’ll be a different hitter if there’s a runner on base and I’m trying to get him in, late in the game, or I’ll be a different hitter when I’m leading off the game.”

Laurila: That’s basically approach. What about mechanically? Read the rest of this entry »

Kristian Campbell shot up the rankings last year, and elevating was a big reason why. Known primarily for his athleticism and bat-to-ball skills when he was drafted 132nd overall by the Red Sox in 2023, the Georgia Tech product transformed his right-handed stroke to the tune of 20 home runs and a 180 wRC+ over 517 plate appearances across three levels. Flying under most radar as recently as a year ago, Campbell is now one of the game’s top prospects. Moreover, he has a legitimate chance to break camp as Boston’s starting second baseman.

I asked the 22-year-old infielder about his swing change when the Red Sox held their annual rookie development camp at Fenway Park earlier this week.

“It’s been all about bat path,” explained Campbell, who had a 90% contact rate but just four home runs in his lone collegiate season (he’d been a freshman redshirt in 2022) . “Instead of being flat, or straight down, I’m trying to hit the ball at a good angle. That’s what I lacked coming into pro baseball, hitting the ball in the air. I never really hit for power before last year.”

The proof is in the numbers, and not just ones that can be found on the back of a baseball card. In 2023, Campbell went deep once in 84 professional plate appearances while logging a 48% ground ball rate with a minus-2 attack angle. This past season, the aforementioned 20 home runs — eight each in High-A and Double-A, and four in Triple-A — were accompanied by a 39% ground ball rate and a plus-9 attack angle. His xwOBAcon jumped from .327 to .422.

According to Campbell, his conversion didn’t require a complete revamping of his mechanics. Read the rest of this entry »