Reviewing PECOTA's Pre-Season Twins Projections

If you can recall the two posts I made almost exactly eight months ago, PECOTA—the flagship projection system from Baseball Prospectus—had some thoughts regarding the Twins. Well, it had thoughts regarding every player, but we only looked at those set to don Minnesota jerseys. Enough beating around the bush: here’s how well the computer did.

(After-season numbers are taken from Baseball Prospectus’ leaderboard found here for pitching, and here for hitting.)

Perhaps most notable at the time was PECOTA’s optimism surrounding Pablo López, who joined the Twins as something of an unknown, possessing immense strikeout potential without the full season of unquestioned dominance. Turns out, the system was actually a pessimist: López crushed it in 2023, turning in 4.8 WARP, good for 3rd in MLB. PECOTA was also too low on Sonny Gray, Joe Ryan, and Bailey Ober; all three starters bested their projections, with Gray doubling his assumed WARP.

Louie Varland can claim underrated status as well; he wasn’t even in the original post and ended up as the eighth-most-valuable pitcher on the team at the end of the year.                                                                                                                                                   

Also, the computer was absolutely correct in regards to Emilio Pagán, whose ERA (2.99) and FIP (3.26) were freakily close to his projections. Perhaps this is a lesson in patience, or—rather—that giving up a lot of homers isn’t necessarily innate in a pitcher’s DNA; this is a weird and frankly unfair game we’re fans of, and Pagán proved that the difference between a hero and a villain is often just a few feet. 

Finally, the Jovani Moran train may have hit a cartoonish boulder, crashed, and exploded in a fiery rage, but he actually came within tickling distance of his projection thanks to a whiff rate amongst the best in MLB. He appears a good bet to rebound next season if healthy. 

Now, let’s move onto the batters:

It, uh, didn’t do great here! Let’s start with the positives: PECOTA nailed Max Kepler’s bounceback season, actually underselling him by a few points of DRC+, but otherwise prophesizing his best season since COVID hit. It also warned people not to be too down on Royce Lewis; we all know how that went.

But… yeah, this one is a mess. Minnesota’s 2nd and 3rd most valuable position players ended up being Willi Castro and Matt Wallner, not Jorge Polanco and Carlos Correa. Byron Buxton ended up behind Christian Vázquez. Jose Miranda is lost somewhere in the Joey Gallo void. Gallo himself… it’s best to keep his name locked up in a box, lest uttering it releases curses unto humanity. I'm a little humored that Trevor Larnach couldn't escape his fate, essentially nailing his pedestrian prediction.

 It's clear this was a season dominated by the unpredictable; be it the rookie onslaught or Castro's elevation, the exact shape of Minnesota's offensive production was atypical, but eventually effective. 

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Overall, I’m impressed with how accurate PECOTA was in regards to the pitching staff. Some hurlers blew past their projections, but the order was mostly in line with how the season played out. Calling on Pagán to exceed wasn’t something perhaps any Twins fan could do. Hitting was a big miss—anyone who predicted Willi Castro being Correa’s equal in DRC+ would have been hanged as a witch. Projections are helpful, but there’s a reason they play the games, and strange and unusual things happen when competitors at the highest level face off against each other.