Roy Mahaffey vs. Robbie Ray — Career Comparison

Looking at the career totals, Roy Mahaffey and Robbie Ray are fairly close on the surface numbers. Robbie Ray posted stronger numbers in ERA (3.94 vs 5.01) and WHIP (1.303 vs 1.546). Roy Mahaffey had the advantage in home runs allowed (0.72 per nine innings vs 1.35). By the career numbers, Robbie Ray 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.