Hayden Birdsong vs. Nestor Cortes — Career Comparison

On the career pitching numbers, Nestor Cortes posted a stronger line than Hayden Birdsong. Nestor Cortes posted stronger numbers in ERA (3.94 vs 4.77) and WHIP (1.192 vs 1.438). By the career numbers, Nestor Cortes 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.