Adam Peterson vs. Ben Rivera — Career Comparison

On the career pitching numbers, Ben Rivera posted a stronger line than Adam Peterson. Ben Rivera posted stronger numbers in ERA (4.52 vs 5.46) and home runs allowed (0.9 per nine innings vs 1.39). By the career numbers, Ben Rivera 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.