John Clarkson vs. Adam Warren — Career Comparison

On the career pitching numbers, John Clarkson posted a stronger line than Adam Warren. John Clarkson posted stronger numbers in ERA (2.81 vs 3.53) and home runs allowed (0.32 per nine innings vs 1.02). By the career numbers, John Clarkson 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.