Erv Lange vs. Art Mahaffey — Career Comparison

On the career pitching numbers, Erv Lange posted a stronger line than Art Mahaffey. Erv Lange posted stronger numbers in ERA (2.23 vs 4.17) and WHIP (1.142 vs 1.351). By the career numbers, Erv Lange 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.