Mort Cooper vs. Roy Witherup — Career Comparison

Looking at the career totals, Mort Cooper and Roy Witherup are fairly close on the surface numbers. Mort Cooper posted stronger numbers in ERA (2.97 vs 4.44) and WHIP (1.215 vs 1.454). Roy Witherup had the advantage in home runs allowed (0.17 per nine innings vs 0.42). By the career numbers, Mort Cooper 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.