Hayden Birdsong vs. Jarred Cosart — Career Comparison

On the career pitching numbers, Jarred Cosart posted a stronger line than Hayden Birdsong. Jarred Cosart posted stronger numbers in ERA (3.98 vs 4.77) and home runs allowed (0.6 per nine innings vs 1.37). By the career numbers, Jarred Cosart 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.