Aaron Scheffer vs. Jim Willis — Career Comparison

Looking at the career totals, Aaron Scheffer and Jim Willis are fairly close on the surface numbers. Aaron Scheffer posted stronger numbers in ERA (1.93 vs 3.39) and home runs allowed (0 per nine innings vs 0.27). Jim Willis had the advantage in WHIP (1.417 vs 1.929). By the career numbers, Aaron Scheffer 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.