Hayden Birdsong vs. Charlie Case — Career Comparison

On the career pitching numbers, Charlie Case posted a stronger line than Hayden Birdsong. Charlie Case posted stronger numbers in ERA (2.93 vs 4.77) and WHIP (1.215 vs 1.438). By the career numbers, Charlie Case 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.