Eddie Matteson vs. Adam Peterson — Career Comparison

On the career pitching numbers, Eddie Matteson posted a stronger line than Adam Peterson. Eddie Matteson posted stronger numbers in ERA (2.36 vs 5.46) and WHIP (1.218 vs 1.516). By the career numbers, Eddie Matteson 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.