Adam Peterson vs. John Sowders — Career Comparison

On the career pitching numbers, John Sowders posted a stronger line than Adam Peterson. John Sowders posted stronger numbers in ERA (4.29 vs 16.88) and WHIP (1.698 vs 3.750). By the career numbers, John Sowders 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.