I decided to look into this to see if there is anything unexpected, but I only did it for March 31-April 31, which accounts for a total of 162 IP by opposing starters. I used the 2008 ERA for the pitchers, which averaged to be 4.23, while the Brewers offense managed only 3.83 R/9 in this period. This makes sense, since the Brewers had trouble scoring runs in April and offense usually picks up in the summer. Anyway, breaking it down farther: For Mar/Apr: Opposing starters with an ERA under 3.5: 57 2/3 IP, 22 ER, 3.43 ERA Opposing starters with an ERA between 3.5 and 4.5: 36 2/3 IP, 21 ER, 5.15 ERA Opposing starters with an ERA over 4.5: 67 2/3 IP, 26 ER, 3.46 ERA Thus, at least for this relatively small sample, the Brewers performed poorly against "bad" and "good" pitchers and great against "average" pitchers. I wish I had the time to extend it to the rest of the season/last season.