Manny Aybar vs. John Mackinson — Career Comparison

On the career pitching numbers, Manny Aybar posted a stronger line than John Mackinson. Manny Aybar posted stronger numbers in ERA (5.11 vs 7.36) and WHIP (1.522 vs 1.773). By the career numbers, Manny Aybar 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.