Julio Teheran Sinks to Success
At this point, it seems like common knowledge that the sinker has fallen out of favor. We’ve covered that development pretty often here at FanGraphs over the past couple of years. In fact, here’s Jeff Sullivan doing just that in a 2017 piece called, “Baseball is Moving Away From the Sinker:”
“The league got a whole hell of a lot better at hitting the low pitch out of the ballpark. Not exclusively the low pitch, but disproportionately the low pitch. Swings started to gear up for elevating the low sinker. This is something that’s continuing today. Where many of those swings have a vulnerability is up, around the belt. The uppercut swing can have trouble connecting with pitches in the upper half, and those pitches have long gotten swings and misses, anyhow. Sinkers? Sinkers are supposed to be low. They’re not so good at the thigh.”
Since then, homer totals have soared and sinker usage rates have fallen. For those still working with a sinker, it’s often their worst pitch. This is true for Noah Syndergaard, Chris Archer, and even a guy like Aaron Sanchez, who has notably reduced his sinker usage since he was traded to Houston.
That doesn’t mean the sinker is entirely dead. The most obvious example of a guy with an effective one is Zack Britton, who’s riding his sinker to a near-80% ground-ball rate this year. Britton’s a unicorn, but there are still several “normal” pitchers succeeding with sinkers too. Look at the top of the pitch value leaderboard, and you’ll see a decidedly normal pitcher with a good sinker in Julio Teheran. Read the rest of this entry »