Jason Anderson vs. Mark Filley — Career Comparison

Looking at the career totals, Jason Anderson and Mark Filley are fairly close on the surface numbers. Jason Anderson posted stronger numbers in ERA (6.39 vs 27) and WHIP (1.974 vs 6.000). Mark Filley had the advantage in home runs allowed (0 per nine innings vs 1.42). By the career numbers, Jason Anderson 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.