John Flinn vs. John Mackinson — Career Comparison

On the career pitching numbers, John Flinn posted a stronger line than John Mackinson. John Flinn posted stronger numbers in ERA (4.17 vs 7.36) and WHIP (1.638 vs 1.773). By the career numbers, John Flinn 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.