Pete Alexander vs. Art Mahaffey — Career Comparison

On the career pitching numbers, Pete Alexander posted a stronger line than Art Mahaffey. Pete Alexander posted stronger numbers in ERA (2.56 vs 4.17) and WHIP (1.121 vs 1.351). By the career numbers, Pete Alexander 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.