Aaron Heilman vs. Duane Theiss — Career Comparison

Looking at the career totals, Aaron Heilman and Duane Theiss are fairly close on the surface numbers. Aaron Heilman posted stronger numbers in ERA (4.4 vs 5.33) and WHIP (1.402 vs 1.963). Duane Theiss had the advantage in home runs allowed (0.33 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.