Mark Appel vs. Erik Swanson — Career Comparison

On the career pitching numbers, Mark Appel posted a stronger line than Erik Swanson. Mark Appel posted stronger numbers in ERA (1.74 vs 4.2) and home runs allowed (0 per nine innings vs 1.66). By the career numbers, Mark Appel 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.