The Most Predictable Man in Baseball
The Tampa Bay Rays are having a tremendous year so far, better than anyone could have expected. They’re a half game out of first in the perennially difficult AL East, and that might be underselling how good they’ve been this year — their BaseRuns record is the best in baseball. How have they done it? Their pitching staff has been the best in baseball by a huge margin, posting a 3.02 ERA and a 3.34 FIP, both of which are miles better than second place. The hitting has been good, but pitching has the Rays playing like a championship contender.
That pitching staff has been a many-headed monster this year, and Yonny Chirinos has been a key part of it. He’s bounced back and forth between starting and following an opener (headlining?) over 75 innings of work, compiling a 2.88 ERA and 4.05 FIP in his second major league season. He was above average last year as well — a matching 3.51 ERA and FIP over nearly 90 innings. He sports a 21.5% strikeout rate and a sterling 4.9% walk rate. In short, Chirinos looks like a mid-rotation major league starter for the foreseeable future. What’s truly amazing about him, however, is that he’s doing that while being the most predictable pitcher in all of baseball.
If you’re behind in the count against Yonny Chirinos, it’s going to be a long day for you. His splitter, which he only learned in 2017, is lights-out. It’s been the third-most-valuable splitter in baseball this year, behind relievers Hector Neris and Kirby Yates. It generates truly video game numbers: a 45% whiff rate, 2.5 ground balls for every fly ball, and a .155 wOBA on plate appearances that end with a splitter. When Chirinos has the advantage, he’s not shy about going to the split: he throws it 43% of the time, more than twice as often as his overall rate of splitters.
No, if you want to beat Chirinos, you need to avoid the splitter. If you end up in a two-strike count, you’ll probably wave at air before heading back to the bench. Get ahead in the count, however, and things change. Chirinos has an effective fastball, a 94-mph sinker with huge horizontal break that runs in on the hands of righties. Still, it’s a fastball, not a world-destroying offspeed pitch. There’s no question which offering you’d rather face. Read the rest of this entry »