Blake Snell and the Terrible, Horrible, No Good, Very Bad Luck
On November 14, 2018, Blake Snell won the AL Cy Young award. It was a close vote, but no one could say Snell didn’t deserve at least to be in the discussion. He compiled a 1.89 ERA, best in the AL, and his peripherals (2.95 FIP, an outrageous 31.6% strikeout rate) weren’t far behind. He was, simply put, one of the best starters in baseball — unfair, as future Rays employee Jeff Sullivan put it. Just more than seven months later, on June 29, 2019, Blake Snell’s ERA was on the wrong side of 5. By RA9-based WAR, he was barely above replacement level in 2019. A strong start yesterday moved his ERA down to a still-inflated 4.87, but it’s worth asking: is something wrong with Blake Snell?
Now, as my RotoGraphs colleague Al Melchior recently put it: nothing is wrong with Blake Snell. Still, it seems like it might merit investigating. Guys with stuff like Snell’s aren’t supposed to even be capable of putting up near-5 ERA’s this far into the season. Al focused on Snell’s strike-throwing, and that’s always a make-or-break issue for a guy with such dynamite stuff, but Snell’s walk numbers, while high, aren’t crippling. He’s actually walking fewer batters than last year, and his K-BB% is a career high. No, Snell’s 2019 has been alarming because of his inconsistency, and that’s worth looking into.
In 2018, Snell made only four starts in which he didn’t last at least five innings. One was his first start back from injury, which hardly counts. This year has been an entirely different story. Snell’s start on June 25, when he survived only 3.1 innings against the Twins, was his sixth outing of 2019 to see him not finish the fifth inning. There’s always batted-ball luck involved in short outings, but still, Snell’s 2019 feels extreme. Did he change something in 2019 that’s leading to more abbreviated outings?
It’s worth saying again that Blake Snell is incredible. All four of his pitches are weapons. His four-seam fastball is the fastest thrown by any left-handed starter, and it generates whiffs on more than a quarter of batters’ swings against it. Its rise and fade are near-unmatched; only Justin Verlander gets more total movement on his four-seam. Snell’s curveball, which he’s throwing 27% of the time this year, is awe-inspiring. Batters whiff on 55% of their swings against it, the second-best mark for any starter who has thrown 100 curveballs this year. His changeup? It generates the fourth-most whiffs per swing, 44%. He rarely throws his slider (7.6% of the time so far this year), but you guessed it: no starter’s slider gets more whiffs per swing than Snell’s. Read the rest of this entry »
Dan Szymborski