Casey Janssen vs. Zach Muckenhirn — Career Comparison

Looking at the career totals, Casey Janssen and Zach Muckenhirn are fairly close on the surface numbers. Casey Janssen posted stronger numbers in ERA (3.63 vs 6) and WHIP (1.238 vs 2.167). Zach Muckenhirn had the advantage in home runs allowed (0 per nine innings vs 0.88). By the career numbers, Casey Janssen 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.