Mike Butcher vs. John Mackinson — Career Comparison

On the career pitching numbers, Mike Butcher posted a stronger line than John Mackinson. Mike Butcher posted stronger numbers in ERA (4.47 vs 7.36) and WHIP (1.613 vs 1.773). By the career numbers, Mike Butcher 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.