I found some good information in The Book with pitchers HR, BB, and K rates as games progress. It uses times through the order, and although pitch counts would be better, these numbers will probably work fine as a baseline for pitcher performance. Time HR% BB% K% 1 .028 .088 .168 2 .032 .082 .158 3 .033 .080 .140 For every time through the order there are about 30-35 pitches thrown, so roughly pitches 1-76 are the first 2 times through the order, and 76-100 is the third time through. For our 4 pitchers, here are their average rates for 1-76, and below them 76-100: HR% BB% K% .026 .071 .178 .044 .088 .127 Compare that to the league average list above now altered, with the first two times through the order averaged, and the 3rd time through below it: HR% BB% K% .030 .085 .163 .033 .080 .140 Wow. What we're seeing here is that our 4 pitchers gave up a whole lot more HR than league average, walked more when the league average actually goes down, and strikeout significantly less batters than the league through pitches 76-100. What to attribute that to, I'm still not sure, but those are pretty significant numbers. My geuss (and hope) is that this was all just bad luck, but 4 pitchers on the same team, all going through this very noticeable decline late in the game? I really don't know.... .