Sean Hjelle vs. Jim Peterson — Career Comparison

Looking at the career totals, Sean Hjelle and Jim Peterson are fairly close on the surface numbers. Sean Hjelle posted stronger numbers in ERA (5.11 vs 5.27) and WHIP (1.503 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 1.08). By the career numbers, Sean Hjelle 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.