Scott Lewis vs. Art Mahaffey — Career Comparison

Looking at the career totals, Scott Lewis and Art Mahaffey are fairly close on the surface numbers. Scott Lewis posted stronger numbers in ERA (3.49 vs 4.17) and WHIP (1.200 vs 1.351). Art Mahaffey had the advantage in home runs allowed (1.13 per nine innings vs 1.91). By the career numbers, Scott Lewis 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.