George Mullin vs. Robin Roberts — Career Comparison

Looking at the career totals, George Mullin and Robin Roberts are fairly close on the surface numbers. George Mullin posted stronger numbers in ERA (2.82 vs 3.41) and home runs allowed (0.1 per nine innings vs 0.97). Robin Roberts had the advantage in WHIP (1.184 vs 1.290). 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.