Count Got Your Tongue? Consider the Breaking Ball

Falling behind in the count puts an enormous amount of pressure on the pitcher. It’s in his best interest to throw a strike and retake control, but knowing this, hitters are more likely to swing. Aiming outside the zone is dicey: It’s great if the hitter bites but disastrous if he doesn’t, and the risk generally outweighs the reward. A pitcher would ideally execute a borderline strike that hitters can’t help but pass up, but that’s easier said than done. Navigating this situation is tricky, and just from a numbers perspective, whoever’s on the mound is pretty much always in trouble. The question isn’t “can the pitcher emerge victorious,” but rather, “Can he escape with minimal harm?”
For decades, pitchers have relied on their fastballs to fight these uphill battles. Part of that is because long ago, some of them actually believed throwing a slider or another secondary pitch wasn’t very manly. You ain’t tough unless you blow a 2–0 heater by your opponent, I guess. But really, it’s because a fastball is the pitch a majority of pitchers are comfortable with, and it’s the one they can most reliably lob in for a strike. If your goal is to equalize the count, why risk using an erratically moving curveball to achieve it?
Unfortunately for those old-timey hurlers, they’re probably rolling in their graves at the apparent cowardice of modern pitchers. Rather than adhere to axioms, pitchers today are challenging notions of what’s “right” or “wrong” in pitching, aided by advancements in pitch- and body-tracking technology. One example of such sacrilege is the continuously increasing rate of breaking balls — sliders, curveballs, and the like — thrown in disadvantageous counts:

It’s true that breaking ball usage is up no matter the count or situation, but I find it particularly interesting that the trend remains strong even when pitchers fall behind. The name of the game is optimization. If teams didn’t think opting for breaking balls when behind in the count granted them an advantage, we wouldn’t see this happening. Granted, just because teams do something doesn’t necessarily means it’s effective, but a league-wide jump of eight percentage points in pitch usage is significant and worthy of investigation. Read the rest of this entry »







