Did you know that Tyler Glasnow was once a Pirate? Yes, like every other baseball writer in existence, I’m contractually obligated to point that out in any article I write about him. Good news, though — I promise that’s the last time I’ll mention them in this article, because I want to talk about something that Glasnow has done this year to add a much-needed wrinkle to his game.

The Glasnow of the past few years was a two-trick pony, if such a thing exists. Trick one: a fastball that sits around 97 mph and touches 101 when he needs it. It doesn’t stand out for exceptional rise or transverse spin efficiency, but it doesn’t need to. Glasnow’s velocity and extension make for a flat-planed, dynamic pitch that both misses bats and induces weak contact.

You already knew that, because you can’t watch a Glasnow appearance without marveling at the graceful explosion of the pitch, seemingly catapulted by his smooth delivery. Here, watch him overpower J.D. Martinez:

Ah, what a joy to watch. Read the rest of this entry »

Joe Musgrove came into the season viewed by many as a breakout candidate, and it’s easy to see why. The 28-year-old Pirate-turned-Padre possesses plus stuff, and the change of scenery — from Pittsburgh to his hometown of San Diego, no less — portends more success…. particularly in the won-loss column. Musgrove went a paltry 1-5 with the N.L. Central cellar-dwellers in 2020, while his new club is poised to win, per our projections, 94 games in the current campaign.

By and large, the breakout has already happened, and not solely because the 6-foot-5, 235-pound right-hander hurled the year’s first no-hitter on Friday night. His 2020 peripherals were those of a pitcher who’d turned the corner. With the caveat that it was a pandemic-shortened season, Mugrove set career-bests in ERA, FIP, and strikeout rate, and more importantly, he did so with improved pitch profiles. Per StatCast, the spin and movement of his offerings were better than they’d ever been.

I asked the righty about that in a spring-training Zoom session.

“I’m not really a big analytical guy; I’m not big on the Rapsodo numbers,” responded Musgrove. “I look at that information more as a benchmark. When I have real strong outings, or I have real poor outings, I look at the numbers to see where they’re at when I’m good, or when I’m poor. But by no means am I going home and saying, ‘I need to get 200 more RPM on my curveball,’ or ‘I need to change the spin axis on this pitch.’ I kind of just let our analytical guys coach me up a little bit on that, and offer suggestions where they can.” Read the rest of this entry »

After a phenomenal debut in 2019, Chris Paddack took a significant step back in his sophomore campaign. Much of those struggles could be linked to the performance of his four-seam fastball. In 2019, opposing batters hit just .204 against his four-seamer with a .275 wOBA. Those marks jumped to .308 and .413, respectively, in 2020. Likewise, Paddack went from a whiff rate on his heater of 23.2% his rookie year to 20.9% last season, a mark just barely over league average for a four-seamer. With that pitch and a plus changeup making up the majority of his pitch mix, the ineffectiveness of his fastball had a much larger impact on his results, as he simply didn’t have anything else in his repertoire.

This spring, Paddack decided to start looking at the analytics behind his fastball. In a mid-March media session, he spoke at length about what he learned about how its shape affects his results:

“Last year I was east to west. I was pulling off. My spin direction was outside of one, for y’all that know the baseball term of that. The axis of the baseball… I was getting two-seam run on my four-seam fastball.”

Here’s a look at the physical characteristics of Paddack’s fastball and its percentile ranks when compared within each pitch type:

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We’re now about 10 days into the season, which means it’s time for a round of “Who’s looking good out of the gate?” Today, I want to focus on three post-hype starters who piqued my interest in the last week: Carlos Rodón, Jeff Hoffman, and Justin Dunn. Obviously, these three have teased before, and given their track records, there’s good reason to be skeptical of them going forward. All three have good arms though, and I’m a sucker for a spring breakout. With that in mind, I’ve donned my yellow zigzagged shirt, taken a running start, and am ready to blast this metaphorical football.

I trust that a small sample warning isn’t really necessary here. We all know that we’re working with extremely limited data at this point in the year, and that the following content comes with an extra-large SSS warning label. I trust you to recognize the intent of this article, which is simply to highlight interesting starts from a few talented but oft-frustrating arms. I’m not declaring that they’re suddenly budding All-Stars; I’m not even arguing they belong on your fantasy team. If someone reads this and comments “Uh, it was one start,” I will, well, I won’t do anything, but someone else will down-vote you in the comments, and that will be embarrassing. Don’t do that.

With that out of the way:

Carlos Rodón

Rodón’s run of bad luck in recent years is well-documented. He missed a couple of months in 2018 with a shoulder injury, then had to go under the knife for Tommy John early the following year. He returned to the mound last season, but only for a handful of innings, and he was unceremoniously non-tendered this past winter. Chicago invited him to camp anyway, and while he had a strong spring and won a job in the rotation, he didn’t have a ton of buzz heading into the season. Read the rest of this entry »

2:00	Jay Jaffe: Good afternoon, folks! Welcome to my first official chat of the 2021 regular season.

2:02

Jay Jaffe: I’m pleased to report that I’m freshly vaccinated with my second shot, but I have to admit that while I wasn’t feeling any negative effects when I set this chat in motion about 90 minutes ago, the mere act of going to pick up my lunch seems to have set off some wobbly legs and general fatigue. Gonna try to power through this for as long as I can, but you might want to have the bullpen ready.

2:03

Jay Jaffe: I was up late playing beat-the-clock to finish this piece on Fernando Valenzuela and the 40th anniversary of Fernandomania before my symptoms kicked in https://blogs.fangraphs.com/remembering-fernandomania-40-years-later/. Remarkably, in 20 years of writing about baseball, I had never written more than a few hundred words at a time on one of my all-time favorite players.

2:03	Jay Jaffe: anyway, on with the show

2:04	Jay Jaffe: Mike Petriello @mike_petriello Me: Man, I wonder if Mike Trout’s 288 wRC+ in the first week is notable for him, that number is insane! Mike Trout: ha, you fool, you stupid infantile fool fangraphs.com/leaders/splits… 9 Apr 2021

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I guess it wouldn’t be baseball in these trying times without a debate about the state of the ball. This year’s rendition started in February when Eno Sarris and Ken Rosenthal of The Athletic reported that they obtained an internal memo Major League Baseball had sent outlining changes to the baseball that would “reduce offense slightly in the 2021 season.” Specifically, Rawlings loosened the tension of the ball’s first wool winding, reducing the weight and bounciness of the ball as measured by COR, or the coefficient of restitution.

How would the new ball affect the league’s offensive environment? At that point, we could only speculate. Included in Sarris and Rosenthal’s article is a cautionary tale from the Korean Baseball Organization, which experienced a crash in league-wide offense after minor reductions to the ball’s COR. But the article also cited Dr. Meredith Willis, who believed that because MLB intended to reduce the ball’s COR along with its weight – the KBO actually increased the weight of its ball by one gram – the effects would be less severe. As for MLB, its memo included an independent lab that found minor decreases in fly ball distance with the new ball.

Then came spring training, and along with it the first uses of the new baseball. As March closed out, Rob Arthur and Ben Lindbergh published an article for The Ringer entitled “The New Baseball Still Seems Juiced.” Using data from spring training games, they made two key observations: (1) home run per contact rate had increased, not decreased, from last spring, and (2) the new ball seemed to have a high drag coefficient. “Higher drag should translate to less carry and fewer home runs,” Arthur and Lindbergh wrote. “Yet the higher-drag balls also have a higher home run rate on contact, because they have a substantially higher exit speed.” If the ball’s COR was really reduced, they added, the opposite phenomenon should occur. Read the rest of this entry »

This is Sara’s first piece as a FanGraphs contributor. She has been writing about baseball on and off since her byline first appeared in her local paper at age 13. Her work has appeared at Baseball Prospectus, where she contributed to Short Relief, and as a lead voice covering the Chicago Cubs for SBNation’s Bleed Cubbie Blue, where she also co-hosts their podcast, Cuppa Cubbie Blue. She’s a fan of advanced metrics, keeping score by hand, and bat flips. Sara is a meticulous researcher who applies that talent to all parts of baseball, from big issues like labor relations to idiosyncratic issues like Javier Báez and his uncanny ability to deliver on an 0-2 count in 2019. She looks forward to bringing her research skills to FanGraphs, which has long been her first stop for data to support her writing.

Most of the talk around Nick Castellanos to start the 2021 season has focused on his two-game suspension for his role in the events preceding the benches clearing between the Reds and the Cardinals during their second game of the season:

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On April 6, Minnesota Twins slugger Nelson Cruz added a new feather to his cap of many accomplishments: he became the king of the Tiger killers, those elite hitters who seem uniquely capable of besting Detroit Tigers pitching at every turn. After hitting all three of his 2021 home runs against the Tigers this past week, Cruz look the top spot among active players on the leaderboard of all-time home runs against the Motown team. With 26 regular season homers, he usurped the title previously held by Alex Gordon, and can rightfully claim his place as the biggest thorn in the Tigers’ paw.

For Tigers fans, the only surprising thing about this fact is that it hadn’t happened years earlier.

If you’re a fan of a team that has shared a division rivalry with the slugger, ask yourself: do you remember the first time your favorite team was personally victimized by Nelson Cruz? My first memory of having my hopes crushed by a Cruz home run is from Game 2 of the 2011 ALCS. The Tigers were vying for a rematch of their 2006 World Series rivalry against the St. Louis Cardinals, but one thing stood in their way: the Texas Rangers.

In Game 2, with the Tigers leading 3-2 and heading into the bottom of the seventh inning, a 31-year-old Cruz came to the plate against Max Scherzer. He absolutely crushed a home run to tie the game for the Rangers. It was a tie that would last for almost two and a half more hours. As the game headed into the 11th inning, Cruz came to the plate again with the bases loaded, this time against Ryan Perry. With the game on the line and the crowd restless, howling over every foul ball, Cruz obliterated an offering from Perry for a game-winning grand slam. Read the rest of this entry »

Early-season baseball analysis can pose challenges. While it’s fun to consider a world in which Yermín Mercedes is the best player in baseball, we know that this level of performance will not stick in the long run. That can make early-season analyses of players premature, as we need data to begin stabilizing before drawing firm, player-specific conclusions. Luckily, however, league-wide data stabilizes much faster, especially when we put league data in its proper monthly context — acknowledging that April baseball and July baseball are, in fact, different. That’s why it’s fascinating to analyze early season league-wide fastball velocity.

Given how much we at FanGraphs have discussed fastballs lately, it might be time to start calling us FastballGraphs. In all seriousness, there has been some excellent discussion about the fastball here on the site, with both Tess Taruskin and Kevin Goldstein covering the pitch. Taruskin made note of young prospects who threw harder in spring training, while Goldstein underscored the importance of the pitch’s shape. Today though, I’ll be focusing on velocity in the season’s early going.

So far, in 2021, pitchers are throwing hard. Through games on April 7, more than 15,000 fastballs — four-seamers, two-seamers, sinkers, and cutters — have been thrown, with an average velocity of 92.7 mph. On the surface, that might not be eye-popping, but if that holds, it would represent an April record in the Statcast Era. In fact, since 2015, no April or May has ever featured a league-average fastball velocity over 92.5 mph:

Read the rest of this entry »

On Thursday afternoon, a familiar groan rippled across the baseball world.

The Mets entered the bottom of the ninth down by one against the Marlins, and had put on a showcase of Fun Baseball to tie the game: a Jeff McNeil bat flip on a bomb into the right field stands, Luis Guillorme hustling out an infield single, and Brandon Nimmo slapping a double down the left field line against an extreme shift. Francisco Lindor was intentionally walked, which brought up Michael Conforto to face Marlins pitcher Anthony Bass. A few pitches later, on a 1-2 count, Conforto leaned his padded elbow into the strike zone and was grazed by a ring-him-up slider that home plate umpire Ron Kulpa was midway through calling before reversing course mid ring-up, instead awarding Conforto first base for a game-winning hit-by-pitch.

Here’s a look at where that pitch was:

And here’s a look at the contact being made:

Ouch?

Read the rest of this entry »