Adrian Morejon vs. Roberto Rivera — Career Comparison

On the career pitching numbers, Adrian Morejon posted a stronger line than Roberto Rivera. Adrian Morejon posted stronger numbers in ERA (3.43 vs 4.5) and WHIP (1.243 vs 1.583). By the career numbers, Adrian Morejon 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.