Frank Brosseau vs. John Mackinson — Career Comparison

On the career pitching numbers, Frank Brosseau posted a stronger line than John Mackinson. Frank Brosseau posted stronger numbers in ERA (4.91 vs 7.36) and WHIP (1.636 vs 1.773). By the career numbers, Frank Brosseau 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.