Jeff Dedmon vs. Michael Petersen — Career Comparison

On the career pitching numbers, Jeff Dedmon posted a stronger line than Michael Petersen. Jeff Dedmon posted stronger numbers in ERA (3.84 vs 5.02) and WHIP (1.530 vs 1.593). By the career numbers, Jeff Dedmon 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.