Chris Michalak vs. Bill Pierro — Career Comparison

Looking at the career totals, Chris Michalak and Bill Pierro are fairly close on the surface numbers. Chris Michalak posted stronger numbers in ERA (4.7 vs 10.55) and WHIP (1.683 vs 2.103). Bill Pierro had the advantage in home runs allowed (0.62 per nine innings vs 1.27). By the career numbers, Chris Michalak had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.