Michael Kirkman vs. John Mackinson — Career Comparison

On the career pitching numbers, Michael Kirkman posted a stronger line than John Mackinson. Michael Kirkman posted stronger numbers in ERA (5.28 vs 7.36) and WHIP (1.569 vs 1.773). By the career numbers, Michael Kirkman 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.