Art Johnson vs. Erik Swanson — Career Comparison

On the career pitching numbers, Art Johnson posted a stronger line than Erik Swanson. Art Johnson posted stronger numbers in ERA (0 vs 4.2) and WHIP (0.667 vs 1.154). By the career numbers, Art Johnson 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.