Art Mahaffey vs. George Mullin — Career Comparison

On the career pitching numbers, George Mullin posted a stronger line than Art Mahaffey. George Mullin posted stronger numbers in ERA (2.82 vs 4.17) and WHIP (1.290 vs 1.351). By the career numbers, George Mullin 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.