Zach McClellan vs. Oscar Villarreal — Career Comparison

Looking at the career totals, Zach McClellan and Oscar Villarreal are fairly close on the surface numbers. Oscar Villarreal posted stronger numbers in ERA (3.86 vs 5.79) and WHIP (1.443 vs 1.929). Zach McClellan had the advantage in home runs allowed (0 per nine innings vs 1.13). By the career numbers, Oscar Villarreal 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.