Jim Peterson vs. Paul Sewald — Career Comparison

Looking at the career totals, Jim Peterson and Paul Sewald are fairly close on the surface numbers. Paul Sewald posted stronger numbers in ERA (4.11 vs 5.27) and WHIP (1.187 vs 1.665). Jim Peterson had the advantage in home runs allowed (0.74 per nine innings vs 1.32). By the career numbers, Paul Sewald 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.