Ben Rivera vs. Johnny Werts — Career Comparison

On the career pitching numbers, Johnny Werts posted a stronger line than Ben Rivera. Johnny Werts posted stronger numbers in ERA (4.29 vs 4.52) and home runs allowed (0.33 per nine innings vs 0.9). By the career numbers, Johnny Werts 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.