Jim Peterson vs. Andrew Saalfrank — Career Comparison

On the career pitching numbers, Andrew Saalfrank posted a stronger line than Jim Peterson. Andrew Saalfrank posted stronger numbers in ERA (1.79 vs 5.27) and WHIP (1.215 vs 1.665). By the career numbers, Andrew Saalfrank 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.