Ronald Belisario vs. John Mackinson — Career Comparison

On the career pitching numbers, Ronald Belisario posted a stronger line than John Mackinson. Ronald Belisario posted stronger numbers in ERA (3.85 vs 7.36) and WHIP (1.382 vs 1.773). By the career numbers, Ronald Belisario 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.