Mark Prior vs. River Ryan — Career Comparison

On the career pitching numbers, River Ryan posted a stronger line than Mark Prior. River Ryan posted stronger numbers in ERA (1.33 vs 3.51) and WHIP (1.180 vs 1.240). By the career numbers, River Ryan 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.