Ryan Buchter vs. Roberto Rivera — Career Comparison

On the career pitching numbers, Ryan Buchter posted a stronger line than Roberto Rivera. Ryan Buchter posted stronger numbers in ERA (3.16 vs 4.5) and WHIP (1.252 vs 1.583). By the career numbers, Ryan Buchter 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.