John Littlefield vs. Zach McClellan — Career Comparison

Looking at the career totals, John Littlefield and Zach McClellan are fairly close on the surface numbers. John Littlefield posted stronger numbers in ERA (3.39 vs 5.79) and WHIP (1.431 vs 1.929). Zach McClellan had the advantage in home runs allowed (0 per nine innings vs 0.48). By the career numbers, John Littlefield 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.