Hayden Birdsong vs. Vibert Clarke — Career Comparison

On the career pitching numbers, Vibert Clarke posted a stronger line than Hayden Birdsong. Vibert Clarke posted stronger numbers in ERA (3.76 vs 4.77) and home runs allowed (0.35 per nine innings vs 1.37). By the career numbers, Vibert Clarke 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.