Hayden Birdsong vs. Chris Volstad — Career Comparison

Looking at the career totals, Hayden Birdsong and Chris Volstad are fairly close on the surface numbers. Hayden Birdsong had the edge in ERA (4.77 vs 5). 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.