Red Anderson vs. Sean O'Sullivan — Career Comparison

On the career pitching numbers, Red Anderson posted a stronger line than Sean O'Sullivan. Red Anderson posted stronger numbers in ERA (4.35 vs 6.01) and home runs allowed (0.46 per nine innings vs 1.64). By the career numbers, Red Anderson 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.