Bill Pertica vs. Adam Peterson — Career Comparison

On the career pitching numbers, Bill Pertica posted a stronger line than Adam Peterson. Bill Pertica posted stronger numbers in ERA (4.27 vs 5.46) and home runs allowed (0.38 per nine innings vs 1.39). By the career numbers, Bill Pertica 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.