David Aardsma vs. Humberto Robinson — Career Comparison

On the career pitching numbers, Humberto Robinson posted a stronger line than David Aardsma. Humberto Robinson posted stronger numbers in ERA (3.25 vs 4.27) and WHIP (1.385 vs 1.487). By the career numbers, Humberto Robinson 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.