Rafael Martin vs. Jim Peterson — Career Comparison

Looking at the career totals, Rafael Martin and Jim Peterson are fairly close on the surface numbers. Rafael Martin posted stronger numbers in ERA (4.5 vs 5.27) and WHIP (1.125 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 2.25). By the career numbers, Rafael Martin 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.