Robinson Leyer vs. Adam Peterson — Career Comparison

On the career pitching numbers, Adam Peterson posted a stronger line than Robinson Leyer. Adam Peterson posted stronger numbers in ERA (16.88 vs 21.21) and WHIP (3.750 vs 4.286). By the career numbers, Adam Peterson 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.