Hayden Birdsong vs. Javier Vazquez — Career Comparison

On the career pitching numbers, Javier Vazquez posted a stronger line than Hayden Birdsong. Javier Vazquez posted stronger numbers in ERA (4.22 vs 4.77) and WHIP (1.269 vs 1.438). By the career numbers, Javier Vazquez 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.