Pierson Ohl vs. Carlos Rosa — Career Comparison

On the career pitching numbers, Carlos Rosa posted a stronger line than Pierson Ohl. Carlos Rosa posted stronger numbers in ERA (3.97 vs 5.1) and home runs allowed (0.53 per nine innings vs 1.5). By the career numbers, Carlos Rosa 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.