Stan Ferens vs. John Mackinson — Career Comparison

On the career pitching numbers, Stan Ferens posted a stronger line than John Mackinson. Stan Ferens posted stronger numbers in ERA (4.18 vs 7.36) and WHIP (1.497 vs 1.773). By the career numbers, Stan Ferens 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.