Hayden Birdsong vs. Frank McAllister — Career Comparison

On the career pitching numbers, Frank McAllister posted a stronger line than Hayden Birdsong. Frank McAllister posted stronger numbers in ERA (4.3 vs 4.77) and WHIP (1.384 vs 1.438). By the career numbers, Frank McAllister 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.