Mark Littell vs. Zach McClellan — Career Comparison

Looking at the career totals, Mark Littell and Zach McClellan are fairly close on the surface numbers. Mark Littell posted stronger numbers in ERA (3.32 vs 5.79) and WHIP (1.440 vs 1.929). Zach McClellan had the advantage in home runs allowed (0 per nine innings vs 0.47). By the career numbers, Mark Littell 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.