Paul Derringer vs. AJ Smith-Shawver — Career Comparison

On the career pitching numbers, Paul Derringer posted a stronger line than AJ Smith-Shawver. Paul Derringer posted stronger numbers in ERA (3.46 vs 3.77) and home runs allowed (0.39 per nine innings vs 1.34). By the career numbers, Paul Derringer 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.