Mike Duvall vs. Cionel Perez — Career Comparison

On the career pitching numbers, Cionel Perez posted a stronger line than Mike Duvall. Cionel Perez posted stronger numbers in ERA (4.22 vs 4.76) and WHIP (1.511 vs 1.863). By the career numbers, Cionel Perez 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.