Hugh McQuillan vs. Sean O'Sullivan — Career Comparison

On the career pitching numbers, Hugh McQuillan posted a stronger line than Sean O'Sullivan. Hugh McQuillan posted stronger numbers in ERA (3.83 vs 6.01) and WHIP (1.404 vs 1.616). By the career numbers, Hugh McQuillan 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.