I write about the Rays a lot. I just wrote about them signing Amed Rosario, for example. Earlier this month, I wrote an article titled “The Rays Can’t Keep Getting Away With This, Can They?”, and in another, I wrote that I had recently daydreamed about one of my favorite Rays players during a root canal. I’m endlessly impressed by how this team does it. But this year? I cannot put into words how wild I find this version of its team construction. In other words, I’m writing about the Rays because they deserve it – or at least I think so.

Last year, they won 99 games. They had both one of the best offenses and one of the best pitching staffs in the American League. They did a little bit of everything, and nearly overtook the Orioles for first place in the AL as a result. But that was last year. Three of Tampa Bay’s top six players aren’t returning.

There’s Wander Franco, of course. He may never play another game of major league baseball. Tyler Glasnow, who looked downright indomitable in his first year back from Tommy John surgery, got traded to the Dodgers. Shane McClanahan is having Tommy John himself. Heck, Jeffrey Springs came into the season as one of the team’s best pitchers, and his own surgery will keep him out until after the All Star break this year.
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It’s been a quiet winter in Pittsburgh. The Pirates lost almost no one from last year’s 76-86 team, but they didn’t add many players either. Their biggest acquisition is probably Aroldis Chapman. After that, it’s Marco Gonzales, Rowdy Tellez, Yasmani Grandal, or Martín Pérez. They’re competent major leaguers all, but hardly exciting additions. But as it turns out, the Pirates had another move to make, and it’s a welcome one:

BREAKING: Right-hander Mitch Keller and the Pittsburgh Pirates are in agreement on a five-year contract extension, sources tell me and @kileymcd. After a breakout season in which he struck out 210, the 27-year-old Keller will anchor the rotation for the team that drafted him.

— Jeff Passan (@JeffPassan) February 22, 2024

This is both exciting and necessary, at least in my opinion. The Pirates haven’t developed many effective starting pitchers in the last, well, ever. Only one Pirates starter in the past decade has eclipsed 10 WAR with the team: Gerrit Cole with 13. After that, their success stories are Jameson Taillon, Joe Musgrove, and, well… Iván Nova is sixth on the list, and that came in 2.5 years after the Yankees traded him to Pittsburgh. As Stephen Nesbitt and Ken Rosenthal recently chronicled in The Athletic, it’s been an ugly decade for baseball in the Steel City.

Mitch Keller has already accrued the third-most starting pitching WAR in the past decade with 7.5. He’s entering his sixth big league season this year, though ups and downs early in his career mean that it’s only his fifth year of service time. The road to success has been bumpy — from 2019 through 2021, he compiled a 6.02 ERA and only racked up 170 innings of major league work. Things have gotten better since then, though. He threw 159 solid innings in 2022 and then made 32 starts in 2023, both times looking like a consistently effective starter rather than the roller coaster ride of earlier years. Read the rest of this entry »

This winter has been one of the weakest markets for middle infielders in recent memory. You remember the shortstop glut of recent years? Carlos Correa, Corey Seager, Francisco Lindor, Trevor Story, Xander Bogaerts… the list of players who either reached free agency or signed extensions to take them off the market went on and on. But this year, the pickings were slim. Depending on personal preference, the best second baseman or shortstop available was… Whit Merrifield? Isiah Kiner-Falefa? I would have said Amed Rosario, only the market clearly disagrees:

Infielder Amed Rosario and the Tampa Bay Rays are in agreement on a one-year, $1.5 million contract, sources tell ESPN. Rosario, 28, will bring a strong bat against left-handed pitching and should get at-bats at shortstop, second base and potentially corner-outfield spots.

— Jeff Passan (@JeffPassan) February 20, 2024

That’s a shockingly light deal for Rosario, at least in my head. I had him at the tail end of my Top 50 free agent rankings, and the crowd and I both penciled him in for a two-year deal worth $8 million per year. Instead, he’s getting less than a fifth of that AAV, and for only a year at that. This merits some investigation, both into why his market didn’t develop and why the Rays came calling in the end. Read the rest of this entry »

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Hey there, and welcome to the last edition of my data-driven look at some mid-tier hitting prospects I like more than the industry consensus. It feels weird, almost funereal, to start this article by mentioning that the series is ending, but that’s just how it is. This will be the fourth installment of my variably named Prospect Week contribution. In it, I use data and a big pinch of intuition to point out some hitters who I think have a good chance of sticking in the majors, even if they’re not your average Top 100 type.

In the past, I’ve done acceptably well at this; I don’t think it’d be fair to say that I’m great at it, but I’ve come up with my fair share of interesting players using this process. In looking through my past lists, I feel good about the process that led me to some guys you’ve heard of (Miguel Vargas and Ezequiel Tovar are probably my biggest hits so far, but I’ve also gotten some role players, and both Gabriel Moreno and Alejandro Kirk performed incredibly well by my model, though I didn’t end up including them in a list thanks to their pedigree) and plenty you haven’t.

What’s so hard about this project? The obvious thing is that my methods are archaic. I’m using some sorting techniques that are still reasonably current. K-nearest neighbors and multiple binary logistic regressions are still my two favorite techniques, and I think they both still do what I want them to. These approaches aren’t state of the art in statistical analysis, but they’re not particularly far from it, especially when you take into account that I’m a baseball writer instead of a data scientist. Read the rest of this entry »

A few articles ago, I was engaging in one of my favorite pastimes: making up the names of non-existent statistics. What can I say? I got into writing because I like lining words up in funny ways. I got into baseball writing because I love baseball. But when the two things I like line up, then we’re really cooking with gas.

The fake statistic in question? Whomps per whiff. You can grasp what it is right away: how often you absolutely whomp the ball, as compared to how often your swing results in nothing but a tiny gust of air and perhaps an emphatic umpire reaction. Is this a predictive statistic? I have no idea whatsoever, but I thought I’d try to see who’s good at it.

The good news: The good players are good. I defined a whomp as a barrel, a whiff as a whiff, and then limited it to players who saw at least 500 pitches in 2023. The best in baseball at it? Ronald Acuña Jr., who just put up an all-time offensive season. Neat! Second best? Mookie Betts, who finished second in MVP voting behind Acuña. Maybe we’re on to something here. Here’s the top 10 by that metric:

One thing that I love about this statistic is that it isn’t secretly ranking players based on their plate discipline. Betts doesn’t swing much, so he doesn’t whiff much. Seager is aggressive but selectively so. Luis Arraez is 12th. Lars Nootbaar is 13th. Those two are polar opposites who nonetheless are both good hitters.
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I thought that today’s article was going to be an easy one to write. Reading Alex Chamberlain’s post on the pulled fly ball revolution made me imagine the worst pitch a pitcher could throw: a sinker that ended up high and inside, an easy-to-contact fastball in the area of the plate that leads to the most damaging types of opposing batted balls. Then I extrapolated my idea out a little bit. Maybe I could look up the pitchers who throw their sinkers high in the zone most often. We could all laugh about how they’re called “sinkers” — so that’s clearly a bad place to throw them. Maybe we would gawk at a table of a few pitchers who do this bad thing, and then we could move on with life.

Well, I can do at least one thing. Here’s a table of the pitchers who threw elevated sinkers in or around the strike zone most frequently in 2023:

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I don’t think I’m alone in my fascination with pulled fly balls. In fact, I know I’m not, because Alex Chamberlain wrote about them today too. These days, we’re practically drowning in data: exit velocities, launch angles, chase rates, aggression rates — the list goes on and on. There are so many different ways of thinking about exit velocity that you can read an entire great article about what they all mean. If you want to translate how hard someone hits the ball into how they’re likely to perform, there’s no shortage of instructive articles. But in that deluge of data, horizontal angle has been left out, for reasons both purposeful and accidental, and the unavailable is always interesting.

Earlier this month, I did some idle digging into what pull rate means for production on contact. The takeaway was, to be generous, middling. It seems like pulling your aerial contact results in better overall production on that contact, but the effect isn’t huge. Perhaps the more interesting takeaway was that xwOBA on these batted balls had a bias: the more pull-happy the hitter, the lower their xwOBA was on the balls they hit in the air. That was the case despite greater overall production on those balls.

That’s a weird little artifact, though I didn’t think too much of it because I kind of knew what it would say in advance. Every time I look at a dead pull fly ball hitter, they’re getting home runs out of batted balls that xwOBA hates. But that doesn’t mean the statistic is working incorrectly; it’s doing exactly what it says on the label by bucketing batted balls based on exit velocity and launch angle. Read the rest of this entry »

Few positions on the Brewers depth chart are more set than catcher. William Contreras, whom they acquired before last season, was their best player in 2023. He led Milwaukee in hitting and finished third on the team in plate appearances despite shouldering a full-time catching load, which normally limits playing time. Most impressively, he delivered a sensational defensive performance a year after he was one of the worst receivers in baseball. On a team that struggled to generate offense, Contreras was a rare and brightly shining exception.

Naturally, the Brewers just signed the best free agent catcher on the market, give or take DH Mitch Garver. That’d be Gary Sánchez, who is joining the team on a one-year, $7 million contract, as Jon Heyman reported. It sounds bizarre – and it may well be bizarre. But there’s a method to Milwaukee’s madness, so let’s try to figure it out together.

There’s one obvious thing going for the Brewers: They really needed a second catcher. Before they signed Sánchez, the plan was to use Eric Haase, he of the 42 wRC+ in 2023, as their second backstop. That plan was not great, to put it succinctly. Haase probably isn’t that bad offensively, but he’s also not particularly good behind the plate. In his best years in Detroit – he hit a career-high 22 home runs in 2021 and topped out at 1.3 WAR in 351 plate appearances the following season – he wasn’t used as a pure catcher, dabbling in the outfield and at DH and racking up meaningfully negative framing numbers when he did don the tools of ignorance.
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