Dominic Leone vs. Jim Peterson — Career Comparison

Looking at the career totals, Dominic Leone and Jim Peterson are fairly close on the surface numbers. Dominic Leone posted stronger numbers in ERA (3.94 vs 5.27) and WHIP (1.455 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 1.26). By the career numbers, Dominic Leone 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.