Ryan Hartman vs. Jim Peterson — Career Comparison

Looking at the career totals, Ryan Hartman and Jim Peterson are fairly close on the surface numbers. Ryan Hartman posted stronger numbers in ERA (3.86 vs 5.27) and WHIP (1.286 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 3.86). By the career numbers, Ryan Hartman 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.