Jay Aldrich vs. John Mackinson — Career Comparison

On the career pitching numbers, Jay Aldrich posted a stronger line than John Mackinson. Jay Aldrich posted stronger numbers in ERA (4.72 vs 7.36) and WHIP (1.537 vs 1.773). By the career numbers, Jay Aldrich 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.