Sam Frock vs. Art Mahaffey — Career Comparison

On the career pitching numbers, Sam Frock posted a stronger line than Art Mahaffey. Sam Frock posted stronger numbers in ERA (3.23 vs 4.17) and home runs allowed (0.24 per nine innings vs 1.13). By the career numbers, Sam Frock 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.