David Aardsma vs. Mike Vasil — Career Comparison

On the career pitching numbers, Mike Vasil posted a stronger line than David Aardsma. Mike Vasil posted stronger numbers in ERA (2.5 vs 4.27) and WHIP (1.297 vs 1.487). By the career numbers, Mike Vasil 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.