Jim Miller vs. Jim Peterson — Career Comparison

Looking at the career totals, Jim Miller and Jim Peterson are fairly close on the surface numbers. Jim Miller posted stronger numbers in ERA (3.48 vs 5.27) and WHIP (1.545 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 1.34). By the career numbers, Jim Miller 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.