Jim Peterson vs. John Stafford — Career Comparison

On the career pitching numbers, Jim Peterson posted a stronger line than John Stafford. Jim Peterson posted stronger numbers in ERA (5.27 vs 14.14) and WHIP (1.665 vs 2.714). By the career numbers, Jim Peterson 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.