Mark Appel vs. Charlie Kerfeld — Career Comparison

On the career pitching numbers, Mark Appel posted a stronger line than Charlie Kerfeld. Mark Appel posted stronger numbers in ERA (1.74 vs 4.2) and WHIP (1.161 vs 1.572). 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.