Pitching Ahead: A Baseball Fundamental
Every so often, I get the sense people under-appreciate the importance of pitching ahead in the count. These phases are usually followed by other phases in which I conclude I’m simultaneously over-appreciating it, and then I return to baseball normalcy, but right now I’m in one of them first phases. And whenever I’m here, it’s weird. From a very impressionably young age, we’re told how important it is to throw strike one. We know, when we think about it, that it’s much better to be ahead than behind, as a pitcher. But it doesn’t come up that much in conversation or analysis. People talk about proxies, but then almost everything is a proxy for pitching ahead in the count. When you’re pitching ahead, you’re pitching in control.
Obviously, it makes a difference with regard to walks and strikeouts. More strikes mean more strikeouts, more balls mean more walks. But it also makes a difference with regard to quality of contact. Just looking at this year’s league-wide splits, pitchers have allowed a .303 BABIP when behind in the count, with a .198 isolated slugging. Meanwhile, they’ve allowed a .287 BABIP when ahead in the count, with a .092 isolated slugging. On contact, when behind in the count, pitchers have allowed 4.7% home runs. On contact, when ahead in the count, they’ve allowed 2.5% home runs. Yeah, there’s some selection bias — better pitchers pitch ahead in the count more often — but that doesn’t explain the gaps. Common sense explains the gaps, mostly.