John McCarty vs. Robb Nen — Career Comparison

Looking at the career totals, John McCarty and Robb Nen are fairly close on the surface numbers. Robb Nen posted stronger numbers in ERA (2.98 vs 3.91) and WHIP (1.270 vs 1.738). John McCarty had the advantage in home runs allowed (0.3 per nine innings vs 0.64). By the career numbers, Robb Nen 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.