Hayden Birdsong vs. Dominic Mulrenan — Career Comparison

Looking at the career totals, Hayden Birdsong and Dominic Mulrenan are fairly close on the surface numbers. Hayden Birdsong posted stronger numbers in ERA (4.77 vs 7.23) and WHIP (1.438 vs 2.143). Dominic Mulrenan had the advantage in home runs allowed (0.32 per nine innings vs 1.37). By the career numbers, Hayden Birdsong 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.