Hayden Birdsong vs. Randy Vásquez — Career Comparison

On the career pitching numbers, Randy Vásquez posted a stronger line than Hayden Birdsong. Randy Vásquez posted stronger numbers in ERA (4.08 vs 4.77) and home runs allowed (1.14 per nine innings vs 1.37). By the career numbers, Randy Vásquez 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.