Originally Posted by dougdirt
Like most calls in baseball though, they are easy to make. Very few calls are borderline, but it is the borderline ones that are important. Some umpires, at least according to Pitch F/X are getting only 85-90% of the strike calls correct. For those guys, we are talking about 35-40 calls per game they are missing. That is an incredible amount.
Oh come on, Doug. For as much complaining as there is about umpire, if it were as easy as it's being made out to be to call most of those calls, more people would be doing it or there'd be less complaining if so many are easy.
Nonetheless, your math is a little off. There are, right now, 292 pitches per game on average this season in Major League Baseball. The league average swing% is 48%, which means that there are an average of 152 pitches called ball or strike. That means there are 23 pitches being missed if we assume only an 85% success rate. But again, MLB tells us their guys are mostly over 90% and the league average is 95-96%, so there can't be many guys anywhere near 85%. At 95% (what MLB has said is the average), there are only eight pitches a game being missed. That means umpires are missing less than one pitch per complete inning.