Jim McDonald vs. Ben Rivera — Career Comparison

Looking at the career totals, Jim McDonald and Ben Rivera are fairly close on the surface numbers. Jim McDonald posted stronger numbers in ERA (4.27 vs 4.52) and home runs allowed (0.46 per nine innings vs 0.9). Ben Rivera had the advantage in WHIP (1.489 vs 1.543). By the career numbers, Jim McDonald 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.