Hayden Birdsong vs. Russ Christopher — Career Comparison

On the career pitching numbers, Russ Christopher posted a stronger line than Hayden Birdsong. Russ Christopher posted stronger numbers in ERA (3.37 vs 4.77) and WHIP (1.330 vs 1.438). By the career numbers, Russ Christopher 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.