Miguel Aguilar vs. John Firth — Career Comparison

On the career pitching numbers, Miguel Aguilar posted a stronger line than John Firth. Miguel Aguilar posted stronger numbers in ERA (6.43 vs 8) and WHIP (1.571 vs 2.111). By the career numbers, Miguel Aguilar 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.