Aaron Scheffer vs. Scott Williamson — Career Comparison

Looking at the career totals, Aaron Scheffer and Scott Williamson are fairly close on the surface numbers. Aaron Scheffer posted stronger numbers in ERA (1.93 vs 3.36) and home runs allowed (0 per nine innings vs 0.72). Scott Williamson had the advantage in WHIP (1.357 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.