Phillip Diehl vs. Jay Marshall — Career Comparison

Looking at the career totals, Phillip Diehl and Jay Marshall are fairly close on the surface numbers. Jay Marshall posted stronger numbers in ERA (7.66 vs 9.47) and home runs allowed (0.73 per nine innings vs 2.84). Phillip Diehl had the advantage in WHIP (1.684 vs 1.845). By the career numbers, Jay Marshall 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.