Bill Bartley vs. John Mackinson — Career Comparison

On the career pitching numbers, Bill Bartley posted a stronger line than John Mackinson. Bill Bartley posted stronger numbers in ERA (3.04 vs 7.36) and WHIP (1.265 vs 1.773). By the career numbers, Bill Bartley 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.