Todd Frohwirth vs. John Mackinson — Career Comparison

On the career pitching numbers, Todd Frohwirth posted a stronger line than John Mackinson. Todd Frohwirth posted stronger numbers in ERA (3.6 vs 7.36) and WHIP (1.403 vs 1.773). By the career numbers, Todd Frohwirth 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.