Casey Fossum vs. Phil Irwin — Career Comparison

Looking at the career totals, Casey Fossum and Phil Irwin are fairly close on the surface numbers. Casey Fossum posted stronger numbers in ERA (5.45 vs 7.27) and WHIP (1.534 vs 2.077). Phil Irwin had the advantage in home runs allowed (1.04 per nine innings vs 1.31). By the career numbers, Casey Fossum 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.