Hayden Birdsong vs. Bill Chappelle — Career Comparison

On the career pitching numbers, Bill Chappelle posted a stronger line than Hayden Birdsong. Bill Chappelle posted stronger numbers in ERA (2.38 vs 4.77) and WHIP (1.272 vs 1.438). By the career numbers, Bill Chappelle 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.