Bryan Abreu vs. John Mackinson — Career Comparison

On the career pitching numbers, Bryan Abreu posted a stronger line than John Mackinson. Bryan Abreu posted stronger numbers in ERA (2.65 vs 7.36) and WHIP (1.174 vs 1.773). By the career numbers, Bryan Abreu 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.