Mac MacArthur vs. Jim Peterson — Career Comparison

On the career pitching numbers, Mac MacArthur posted a stronger line than Jim Peterson. Mac MacArthur posted stronger numbers in ERA (5.02 vs 5.27) and WHIP (1.500 vs 1.665). By the career numbers, Mac MacArthur 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.