Hayden Birdsong vs. Charlie Smith — Career Comparison

On the career pitching numbers, Charlie Smith posted a stronger line than Hayden Birdsong. Charlie Smith posted stronger numbers in ERA (2.81 vs 4.77) and WHIP (1.232 vs 1.438). By the career numbers, Charlie Smith 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.