Mark Prior vs. Reb Russell — Career Comparison

On the career pitching numbers, Reb Russell posted a stronger line than Mark Prior. Reb Russell posted stronger numbers in ERA (2.33 vs 3.51) and WHIP (1.080 vs 1.240). By the career numbers, Reb Russell 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.