Aaron Bummer vs. Charles Witherow — Career Comparison

Looking at the career totals, Aaron Bummer and Charles Witherow are fairly close on the surface numbers. Aaron Bummer posted stronger numbers in ERA (3.8 vs 18) and WHIP (1.355 vs 4.000). Charles Witherow had the advantage in home runs allowed (0 per nine innings vs 0.54). By the career numbers, Aaron Bummer 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.