Mike Duvall vs. Williams Jerez — Career Comparison

On the career pitching numbers, Mike Duvall posted a stronger line than Williams Jerez. Mike Duvall posted stronger numbers in ERA (4.76 vs 5.33) and home runs allowed (1.06 per nine innings vs 1.78). By the career numbers, Mike Duvall 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.