Rollie Fingers vs. John Mackinson — Career Comparison

On the career pitching numbers, Rollie Fingers posted a stronger line than John Mackinson. Rollie Fingers posted stronger numbers in ERA (2.9 vs 7.36) and WHIP (1.220 vs 1.773). By the career numbers, Rollie Fingers 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.