Jim Cosman vs. Roy Witherup — Career Comparison

Looking at the career totals, Jim Cosman and Roy Witherup are fairly close on the surface numbers. Jim Cosman posted stronger numbers in ERA (3.05 vs 4.44) and WHIP (1.355 vs 1.454). Roy Witherup had the advantage in home runs allowed (0.17 per nine innings vs 0.65). By the career numbers, Jim Cosman 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.