Roger Clemens vs. Christy Mathewson — Career Comparison

On the career pitching numbers, Christy Mathewson posted a stronger line than Roger Clemens. Christy Mathewson posted stronger numbers in ERA (2.13 vs 3.12) and WHIP (1.058 vs 1.185). By the career numbers, Christy Mathewson 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.