Sean O'Sullivan vs. Clarence Walters — Career Comparison

Looking at the career totals, Sean O'Sullivan and Clarence Walters are fairly close on the surface numbers. Clarence Walters posted stronger numbers in WHIP (1.472 vs 1.616) and home runs allowed (0 per nine innings vs 1.64). Sean O'Sullivan had the advantage in ERA (6.01 vs 6.11). By the career numbers, Clarence Walters 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.