Leo Marentette vs. Jim Peterson — Career Comparison

Looking at the career totals, Leo Marentette and Jim Peterson are fairly close on the surface numbers. Leo Marentette posted stronger numbers in ERA (4.32 vs 5.27) and WHIP (1.560 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 1.08). By the career numbers, Leo Marentette 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.