Hayden Birdsong vs. Bill McCahan — Career Comparison

Looking at the career totals, Hayden Birdsong and Bill McCahan are fairly close on the surface numbers. Bill McCahan posted stronger numbers in ERA (3.84 vs 4.77) and home runs allowed (0.46 per nine innings vs 1.37). Hayden Birdsong had the advantage in WHIP (1.438 vs 1.521). By the career numbers, Bill McCahan 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.