Sean O'Sullivan vs. John Turner — Career Comparison

On the career pitching numbers, John Turner posted a stronger line than Sean O'Sullivan. John Turner posted stronger numbers in ERA (1.56 vs 6.01) and WHIP (0.750 vs 1.616). By the career numbers, John Turner 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.