Hayden Birdsong vs. Paul Moskau — Career Comparison

On the career pitching numbers, Paul Moskau posted a stronger line than Hayden Birdsong. Paul Moskau posted stronger numbers in ERA (4.22 vs 4.77) and home runs allowed (0.95 per nine innings vs 1.37). By the career numbers, Paul Moskau 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.