Mark Kiefer vs. Amos Willingham — Career Comparison

On the career pitching numbers, Mark Kiefer posted a stronger line than Amos Willingham. Mark Kiefer posted stronger numbers in ERA (4.29 vs 7.11) and WHIP (1.481 vs 1.895). By the career numbers, Mark Kiefer 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.