As the 2021 season nears its Memorial Day checkpoint, feast your eyes upon some stars who are off to the best starts of their career, a couple of wily veterans still learning (and if they know what’s good for them, eventually unlearning) some new tricks, and two-up-and down hurlers on a quest for consistency.

Tuesday, May 18, 6:40 PM ET: Trevor Rogers vs. Zack Wheeler

Two of the National League’s best pitchers through the season’s first month are on a collision course at Citizens Bank Park. One is an NL East mainstay who generated considerable prospect hype; the other is making a name for himself after a relatively anonymous minor league career. While Rogers was a first-round pick and a top-six prospect in the Marlins’ system heading into the season, he certainly was not on many fans’ radars outside of South Florida; our own Eric Longenhagen viewed him as a “stable 2-WAR starter prospect.”

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The Padres already had to endure life without Fernando Tatis Jr. for one stretch this season due to his left shoulder subluxation, and now they’re without him again. On Tuesday, the 22-year-old shortstop tested positive for COVID-19 and landed on the Injured List. He quickly gained company when right fielder Wil Myers also tested positive, while three other Padres — first baseman Eric Hosmer, outfielder Jorge Mateo, and superutilityman Jurickson Profar — were sidelined via MLB’s contact tracing protocols. The absences have left San Diego significantly shorthanded and highlighted the potential competitive disadvantage that a team can face while dealing with an outbreak.

The Padres aren’t the only team in the midst of a COVID-19 cluster, either. On Tuesday, about an hour before Tatis’ positive test became public, news of an outbreak among the Yankees’ coaching staff broke as well. While Padres manager Jayce Tingler declined to say whether any of his sidelined players have been vaccinated, their status will become apparent depending upon how quickly they’re allowed to return (more on which below). Meanwhile, the Yankees’ group — now up to eight, including third base coach Phil Nevin, first base coach Reggie Willits, pitching coach Matt Blake, and shortstop Gleyber Torres, plus four unnamed members of the team’s traveling staff — are known to have been fully vaccinated. In fact, the Yankees were among the majors’ first teams to reach the 85% vaccination threshold that allowed them to relax certain health and safety protocols. But less than a week after MLB announced that more than 83% of all Tier 1 individuals (players, managers, coaches, athletic trainers and support personnel) had been partially or fully vaccinated, and that it had gone a week without a single positive test from its major league camps (and just one positive from a staffer at an alternate site), the Padres and Yankees offered rude reminders of COVID-19’s lingering presence.

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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 »