Aaron Heilman vs. Rich Thompson — Career Comparison

Looking at the career totals, Aaron Heilman and Rich Thompson are fairly close on the surface numbers. Aaron Heilman posted stronger numbers in ERA (4.4 vs 5.05) and WHIP (1.402 vs 1.667). Rich Thompson had the advantage in home runs allowed (0.79 per nine innings vs 1.03). By the career numbers, Aaron Heilman 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.