These are notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Jarren Duran, CF, Boston Red Sox
Level & Affiliate: Triple-A Worcester   Age: 24   Org Rank: 7   FV: 45
Line: 2-for-5, 2 HR, 2 K

Notes
This is the kind of thing you like to see from a guy who clearly underwent a swing change last year but wasn’t able to play in actual games to show us if it was going to have a meaningful impact. In fact, when Duran went to Puerto Rico for winter ball after spending the summer at the alt site, he failed to hit for power there as well. Now he already has three homers in 2021, which is just two shy of his single-season career high. As he’s doing this, Duran is also striking out 33% of the time, a far cry from the ultra-low rates that helped make him a prospect in the first place. It’s rare for a prospect this old to be such a high-variance player. We’re all learning about how Duran’s swing change is going to alter his output in real time. Read the rest of this entry »

These are notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Corbin Carroll, CF, Arizona Diamondbacks
Level & Affiliate: Hi-A Hillsboro   Age: 20   Org Rank: 1 (20 overall)   FV: 60
Line: 3-for-5, HR, 3B, BB, 2 SB

Notes
I’m going to bet Carroll goes to the Futures Game and ends up promoted to Double-A shortly after the showcase. He’s shown no signs of slowing down after looking like the best player in all of Arizona during 2020 instructs. This is the kind of player who’s going to out-produce his raw power in games because the quality of his contact is just so good. His homer yesterday (which tied the game in the ninth) was hit to the opposite field. It wasn’t like a lot of oppo bombs that rely on brute strength (think of Giancarlo Stanton’s right-center homers) or just happen to suit the swing path of someone with big power (Ryan Howard). Instead, Carroll just dove to try to cover the outer third of the plate and poked the barrel there, and he hit the bottom of the ball with the sweet spot of the bat. Read the rest of this entry »

These are notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Brandon Valenzuela, C, San Diego Padres
Level & Affiliate: Low-A Lake Elsinore   Age: 20   Org Rank: tbd   FV: 40
Line: 2-for-3, 2 BB

Notes
Valenzuela was in the honorable mentions section of last year’s Padres list as a notable teenage follow due to his athleticism and physique, both of which are uncommon for a catcher. He’s off to a strong start at Low-A Lake Elsinore with three hits (one a homer), four walks and no strikeouts in his first two games. Valenzuela switch-hits, he tracks pitches well, and the bat-to-ball and strike zone feel pieces were both in place already throughout 2019, but he’s swinging with a little more explosion now. Well-built players with a foundation of skills rather than tools are often a threat to breakout as those more overt physical tools come with maturity, and we may be seeing the early stages of that here.

Jose Salvador, LHP, Los Angeles Angels
Level & Affiliate: Low-A Inland Empire  Age: 21   Org Rank: tbd   FV: 35+
Line: 4.1 IP (relief), 1 H, 1 BB, 1 R, 12 K Read the rest of this entry »

Despite playing for the Yankees and having the largest contract ever handed out to a pitcher, I think Gerrit Cole’s start to the 2021 season is going under the radar. Now, I have no empirical evidence that this is the case, but go with me here. I think two things are at play. First, Jacob deGrom is striking out every batter he faces (do not fact check me on that) and plays in the same city. Second, the Yankees’ struggles have been the talk of baseball in the early going, with much of the focus centered on the lineup and rightfully so. The team’s performance thus far has been extremely underwhelming, though they are 9-4 since their 5-10 start.

None of the blame for the Yankees tepid beginning can be put on Cole, however. He is off to a fantastic start. Through his first six starts, he has struck out 44.3% of the batters he has faced and walked only 2.1%. That strikeout rate is third in the majors behind deGrom and Corbin Burnes; the walk rate sits fourth in the league behind Burnes, Zach Eflin, and Walker Buehler. Put those two figures together and Cole has a K-BB% of 42.1%, only a few percentage points behind Burnes and deGrom and a shade under 10 percentage points above Joe Musgrove. The difference between Cole and Musgrove is about the same as the difference between Musgrove and Clayton Kershaw who is 19th on the leaderboard. Cole’s 2.4 WAR is tops in the league, though he has made one more start than both deGrom and Burnes, though I will note that he has only thrown two and two thirds more innings than deGrom so on a rate basis he has actually been more effective in accumulating WAR. Most of the difference has to do with a .315 BABIP allowed compared to deGrom’s .241 and a strand rate that is 8.3 percentage points lower.

So, Cole has been great. But this is not a breakout. Cole has been one of the best handful of pitchers in the sport since he first donned an Astros uniform in 2018. In the three preceding seasons, he posted a 36.6% strikeout rate and 6.8% walk rate over 485.2 innings, good for 6.05 WAR per 200 innings pitched. What is notable is that early on, he is pitching as well as ever. Better even. Since 2018, Cole only has one six start stretch where he struck out at least 44.3% of opposing hitters (44.6% from the end of July to end of August in 2018) and he has never posted a six start stretch walking so few batters (on a rate basis). At this point baseball fans are accustomed to Cole’s dominance over the opposition, but the degree to which he is doing so is unprecedented. Read the rest of this entry »

This week kicks off with two exciting players who should leave a huge impact on the sport over the next decade, and concludes with two who left their fingerprints all over the last one.

Monday, May 3, 9:38 PM ET: Tyler Glasnow vs. Shohei Ohtani

Outside of a deGrom-Ohtani matchup (which, All-Star Game, if you’re listening…) you’d be hard pressed to come up with a more exciting combination of starting pitchers. Tyler Glasnow, a pitcher who’s been abandoned by consistency at times in the past, is turning his question marks into periods. The looming issue with Glasnow was always when, not if, his strikeout numbers would reach kick-ass status. Like many of his fellow right-handed power pitchers, getting out of Pittsburgh was a great start. In his first full season with Tampa – albeit in just 12 starts – Glasnow made it over the 30% K-rate hump for the first time. His second full season with the Rays ended with a 38.2 K% and a trip to the World Series. This season, he’s still climbing, and hitters are getting completely neutralized.

Notching 10 or more strikeouts in three of his last four starts, including a career-high 14 on April 12 against the Rangers, Glasnow’s strikeout percentage is a robust 39.2%. With Blake Snell and Charlie Morton out of the picture, Glasnow is still bulldozing everything in his path, and he’s on an immaculate pace.

The most elementary reasons for that? Rather than going all in on fastballs and curveballs – pitches he threw a combined 95.4% of the time last season – Glasnow has scaled back the curve and introduced a slider-cutter hybrid. He’s spoken about the increased confidence that came from working with Tampa Bay’s coaching staff and their support, stating that they instructed him to “out stuff” guys rather than trying to dot the corner. When he only had two pitches though, his stuff was too predictable. Enter the “slutter,” a pitch that Glasnow admits has made things easier on him, which I’m sure he and his Boy Meets World good looks really needed. Read the rest of this entry »

It would be inaccurate to say that the Yankees suddenly have a catching controversy, but only because the situation has been building for years, and already came to something of a head last fall. While Gary Sánchez burst onto the scene a few years ago as one of the game’s top backstops, he has struggled mightily in three years out of the past four, to the point that he started just two of the team’s seven postseason games last October and was nearly non-tendered last December. Amid his latest slump and the team’s ongoing funk, Yankees manager Aaron Boone said on Tuesday that going forward, Sánchez and longtime understudy Kyle Higashioka will share the starting job.

“Kind of we’ll just go day by day,” Boone told reporters. “They’re obviously both going to play a lot. But it will be a day by day thing that I’ll try to communicate as best I can.”

“[Higashioka has] just earned more playing time. Simple as that… His improvements the last couple of years on both sides of the ball have been strong. I think the way he’s played here on the onset of the season has earned him some more opportunities.”

The move has as much to do with ascendance of the 31-year-old Higashioka — a seventh-round 2008 pick who’s spent parts of five seasons at Triple-A Scranton-Wilkes/Barre plus the past season-and-change as the top backup — as it does the ongoing descent of the 28-year-old Sánchez, a two-time All-Star. After a miserable 2020 campaign in which he hit an unfathomable .147/.253/.365 (68 wRC+) with 10 homers and -0.1 WAR, Sánchez showed signs of a bounce back during spring training, and homered in each of the Yankees’ first two games of the regular season against the Blue Jays. He hasn’t homered since, however, and has gone just 6-for-48 with a lone double and seven walks since en route to a .182/.308/.309 (85 wRC+) line, that while his defense has again regressed. He’s hardly the only reason that the Yankees have stumbled to an 11-13 start — they were 9-13 before rolling into Camden Yards for their usual pillaging and plundering — but with Higashioka outplaying him on both sides of the ball as so many of their other hitters have slumped, the time is right for the Yankees to try this. Read the rest of this entry »

It feels like only yesterday that the Yankees snatched Mike Tauchman from the Rockies for a pittance and unleashed him on the AL East. In 2019, Tauchman was electric; his .277/.361/.504 slash line buoyed the Yankees in a season where they desperately needed it. Injuries (and 100 PA in the minors) kept him from playing a full year, but even in only 296 plate appearances, he managed 2.6 WAR, sixth among Yankees batters.

That performance didn’t carry over into 2020. Despite the team’s intermittent injury problems, the Yankees used him as a fourth outfielder and defensive replacement. He didn’t hit a single home run, a concise summary of what went wrong: his power disappeared overnight. By the start of this year, he was barely playing and out of minor league options, which makes last night’s development unsurprising: the Yankees traded him to San Francisco in exchange for Wandy Peralta and a player to be named later, as Jack Curry first reported.

Tauchman had lost his spot in the Yankees’ outfield, and it’s not hard to see why. Aaron Judge and Aaron Hicks are playing everyday, which left one outfield spot for three outfielders: Tauchman, Clint Frazier, and Brett Gardner. Tauchman and Gardner fulfill similar roles, and the team was giving Gardner the majority of the playing time while carrying no backup shortstop. Frazier is the only outfielder with options, but he’s playing far more than Tauchman, which meant Tauchman was the odd man out — the team needed to trade him to avoid exposing him to waivers. Read the rest of this entry »

This is Owen’s first piece as a FanGraphs contributor. Owen is a recent college graduate who is passionate about all things baseball, data, and baseball data. As a native of Northern California, he has been a firsthand witness to historic baseball events such as Sean Doolittle, hitting prospect; Aaron Judge, football player; and Cliff Pennington. Among other things, he hopes to provide insight into machine learning and advanced analytics.

Aaron Judge has always been a fascinating case study; anyone with such an extreme profile helps to build our understanding of both what is possible and what is relevant to our understanding of which players are good. We know that even in the face of a high strikeout rate and below-average contact rates, Judge is an elite player, due in no small part to his 99th percentile power; he owns a career wRC+ of 151 despite having a 31% strikeout rate. But for many, there is a nagging sense of “what if.” What kind of hitter could he be if his plate discipline were better?

Those “what ifs” are the result of the improvement we saw Judge make after a 2017 swing change. We’re now years removed from that campaign. Judge’s 1,000-plus plate appearances since then make it likely that his plate discipline skills are what they are at this point. He was a model of consistency from 2017-19: an O-Swing% in the range of 24.6% to 25.9%, a Swing% that ranged from 40.3% to 42.7%, a CSW% that ranged from 28.6% to 31.5%, and a Contact% that ranged from 65.1% to 67.6%. Our coarse understanding of hitters’ plate discipline skills is that they’re largely immutable. After all, if they were more malleable, we’d probably see a lot more players cut their strikeout rates and boost their walk rates. Sometimes a change in how much a hitter is swinging outside the zone will stick out, but it’s often accompanied by a shift in how much they’re swinging overall, suggesting a change in their approach rather than a leap forward in their underlying ball and strike recognition. Read the rest of this entry »

Which players are most essential to their team’s postseason odds? While that list contains many of the best players in baseball, it’s not a strict ranking of the sport’s brightest stars. When looking at who is the most irreplaceable in the short-term, there are questions beyond just how good the player in question is. It becomes a matter of marginal utility. To a team already saddled with a doomed 2021 outlook, losing a star is unfortunate — obviously very much so for the player in question — but won’t really affect their chances of making the playoffs. The Colorado Rockies could build a time machine, kidnap Ted Williams, and stick a very confused Splendid Splinter in their lineup and it still wouldn’t change their near-term fate. And the same goes for teams at the opposite end of the spectrum — you can’t tip over your house with a leaf blower.

Of course, some teams are simply better equipped to deal with these kinds of nasty surprises than others, able to rely on enviable depth to weather absences. Two such nasty surprises have happened recently and illustrate the point well, albeit in opposite directions. Stephen Strasburg of the Washington Nationals was placed on the Injured List with shoulder inflammation after a mess of a start that saw him caught rubbing his shoulder on camera. (For more on the Strasburg injury, check out my colleague Jay Jaffe’s piece discussing what it means to Washington.) Another scare involved Mookie Betts, who took a hard, high-and-in offering from Rafael Montero directly on his forearm.

Luckily, Betts’ injury seems unlikely to sideline his for long — Dave Roberts says he expects him back later this week — but even if it had meant a longer absence, the Dodgers would have had little need to panic. Even in the worst-case scenario, where the team loses him for the rest of the season, it’s hard to derail this playoff train; the ZiPS projections have their playoff probability collapsing from 99.6% to…97.5%. A drop-off of two percentage points is a relatively minor one, smaller than the projection change if the White Sox lost Adam Eaton or the Astros had to suddenly replace Yuli Gurriel. Presumably, we have unanimous agreement that Betts is easily the most valuable player listed here.

The Nationals, on the other hand, are very reliant on their stars. Should they lose any of their key players — mainly Strasburg, Juan Soto, Trea Turner, Max Scherzer — it would nearly doom their October hopes. Soto joined Strasberg on the IL yesterday after suffering a strained left shoulder. Losing him for the duration would cause the club to miss the playoffs in 81% of the simulations in which the Nats would otherwise make it.

As steep as that sounds, from a quantitative standpoint, losing Soto isn’t the biggest possible loss in baseball in terms of playoff probability; ZiPS already sees the Nats having an uphill climb at 12.2%. The teams that have the most to lose are those with two key elements: a playoff fate that is very much undecided and and a lack of ready replacements elsewhere in the organization. So, as of Tuesday morning, here are baseball’s most irreplaceable players. The below changes in playoff odds assume a season-ending injury and the use of an in-house replacement. Just to illustrate how changeable this list is, only two of the top 10 are repeats from 2020.

Mike Trout, Los Angeles Angels (-35.5%)

As the best player of his generation, Trout has a way of finishing at the top of lists, but his placement here is actually fairly unusual. He has sometimes missed this ranking completely, as the Angels have an impeccable record of building inadequate teams around their franchise player. But the AL West is open enough, and the Angels are good enough, that this is the year they really can’t afford to lose him. Trout going down would already be a huge loss even if the Angels had an extra league-average outfielder hanging around the roster. But with the likely in-house solution being to shuffle around the outfield, resulting in more playing for Juan Lagares and some combination of Scott Schebler and eventually Taylor Ward, that’s not the team’s situation.

Gerrit Cole, New York Yankees (-29.5%)

That Cole ranks so highly is not a slight on the quality of the Yankees’ starting pitching. They’re actually quite deep with interesting, talented arms who could step in if the worst should happen and they lose their ace. What is a problem is that after Cole, the Yankees have a lot of pitchers with spotty injury records. ZiPS already assumes that the team will have to turn to that depth multiple times before 2021’s final pitch is thrown. To lose the guy they want to set-and-forget at 200 innings would be a big blow. Complicating the picture is that while the Yankees are still the favorite, their slow start does matter and means that they’ve already lost a good chunk of their margin for error over the Rays, Blue Jays, and Red Sox in the division.

Ronald Acuña Jr., Atlanta Braves (-28.3%)

Acuña wasn’t the National League MVP in 2020, but he’s certainly the player I’d least like to lose if I owned the Atlanta Braves. All the projection systems love him for obvious reasons, but none more than ZiPS, which sees him as the only player in baseball to have non-laughable odds of becoming baseball’s first 50/50 club member. Drew Waters, Ender Inciarte, and Guillermo Heredia could replace the at-bats, but none of them have the recipe to replace the awesomesauce Acuña uses to feast on opposing pitchers.

Alex Bregman, Houston Astros (-28.1%)

Houston’s rotation depth over the last four years has descended from utopia to yikes and now the team’s offense is absolutely crucial to the Astros playing October baseball. The franchise’s offensive core may have originally been led by Jose Altuve and then Carlos Correa and George Springer, but Alex Bregman is now The Man, the hitter they can least afford to have missing from the lineup. ZiPS sees Aledmys Díaz and Abraham Toro as better-than-replacement talent, but Houston’s unlikely to run away with the division the way it has in some recent seasons, making every win crucial.

Jacob deGrom, New York Mets (-25.0%)

deGrom drops from first to fourth on the list, but that’s not due to any decline in his performance. Rather, with the Mets under new ownership, the team didn’t go into the season with five starting pitchers who looked good on paper and a roster that couldn’t withstand injuries to the rotation. This time around, the Mets actually have options. None of them could fully replace deGrom, mind you, but plenty could at least be respectable fifth starters on a good team.

Carlos Correa, Houston Astros (-24.1%)

Given Correa’s injury history, the fact that he ranks highly on a list like this should greatly concern the Astros. ZiPS sees Bregman as the clearly superior player but also sees the options after Correa as less enticing. Díaz isn’t a particularly good defensive shortstop, and Toro wouldn’t be an option at the position. Alex De Goti has interesting power but is a massive downgrade from Correa. Houston would likely have to explore a trade if misfortune befell Correa, but the team may have other needs, so that’s not a great scenario either.

Luis Robert, Chicago White Sox (-23.2%)

From a straight-up projection standpoint, Robert falls short of most of the names on this list. Just on the Sox, ZiPS thinks Lucas Giolito is a significantly more valuable player overall, at least when he’s not pitching in the morning. But if something should happen to Giolito, Chicago has spare arms to patch up the hole. If the team loses Robert, let’s just say ZiPS does not have a case of Leurymania or Engelalia. The race with the Twins is likely going to be a tight one and the Royals have shown surprising spunk. The White Sox could ill afford an injury to their center fielder.

Byron Buxton, Minnesota Twins (-22.7%)

Is this the year that Byron Buxton finally stays healthy and is awesome? In just nine games, he’s already collected an impressive 1.5 WAR! Buxton will fall off from his 15-WAR pace, of course, but a lot of the scenarios in which ZiPS sees Minnesota taking down Chicago involve a solid season from Buxton. Even if his offense regressed hard toward his career 93 wRC+, the team would struggle to replace his glove, which has remained a major plus even through his various injuries.

Anthony Rendon, Los Angeles Angels (-21.8%)

To nobody’s surprise, Rendon isn’t quite the player that Mike Trout is. But the Angels have real playoff hopes, and even with the team having better replacements for injured infielders than outfielders, it would struggle to replace Rendon. Franklin Barreto’s elbow is enough to just squeeze Rendon onto this list, where he’d otherwise finish 12th, with Gleyber Torres taking the 10-spot.

Freddie Freeman, Atlanta Braves (-21.7%)

I love Pablo Sandoval, but not as my starting first baseman. Nor would Austin Riley playing first (with Johan Camargo, Orlando Arcia, and Ehire Adrianza pitching in at third) remedy the situation. Freeman’s the best first baseman in baseball, and even if the position isn’t as important as it was 40 years ago, he’s a crucial part of the lineup.

The Yankees hit bottom this past weekend, not once but multiple times. Projected to be the AL’s best team, they’re instead the worst thus far, with a 5–10 record and a five-game losing streak. On Friday, they played so badly against the Rays that Yankee Stadium fans started hurling baseballs back onto the field, and afterwards, manager Aaron Boone dressed his players down in a closed-door meeting. In terms of outcomes, the stern lecture didn’t help, as the Yankees lost again on Saturday and Sunday, making it the first time they’ve been swept this year.

Friday night’s game saw the Yankees fall behind almost immediately, as opener Nick Nelson surrendered hits to the first three Rays he faced, capped by a two-run double by Brandon Lowe. He escaped without further damage, and Michael King entered to throw three shutout innings, but the Yankees managed just one hit in six innings against Rays starter Michael Wacha. When King departed, errors by Gio Urshela and Rougned Odor helped the Rays roll up four runs against Luis Cessa and then two against Lucas Luetge to pull ahead 8–0. The Yankees finally got on the board via a seventh-inning two-run homer by Giancarlo Stanton, but by the eighth, fans were disgusted enough to throw maybe a dozen baseballs on the field in the general vicinity of the Rays’ outfielders, halting play for a couple of minutes:

Play stoppage because of an excess of baseballs… No really, Yankees fans started throwing baseballs on the field.

We don't get it either!

Watch @RaysBaseball on Bally Sports Sun & stream it here: https://t.co/Mk8FfLbJty #RaysUp pic.twitter.com/fHHy7FIZs8

— Bally Sports Sun: Rays (@BallyRays) April 17, 2021

Read the rest of this entry »