Pierson Ohl vs. John Rooney — Career Comparison

On the career pitching numbers, Pierson Ohl posted a stronger line than John Rooney. Pierson Ohl posted stronger numbers in ERA (5.1 vs 6.75) and home runs allowed (1.5 per nine innings vs 6.75). By the career numbers, Pierson Ohl 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.