Mitchell Parker vs. Adam Peterson — Career Comparison

On the career pitching numbers, Mitchell Parker posted a stronger line than Adam Peterson. Mitchell Parker posted stronger numbers in ERA (5.02 vs 5.46) and WHIP (1.372 vs 1.516). By the career numbers, Mitchell Parker 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.