David Aardsma vs. Bill Dailey — Career Comparison

On the career pitching numbers, Bill Dailey posted a stronger line than David Aardsma. Bill Dailey posted stronger numbers in ERA (2.76 vs 4.27) and WHIP (1.255 vs 1.487). By the career numbers, Bill Dailey 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.