Bill Chappelle vs. Bill Williams — Career Comparison

On the career pitching numbers, Bill Chappelle posted a stronger line than Bill Williams. Bill Chappelle posted stronger numbers in ERA (2.38 vs 5.06) and home runs allowed (0.05 per nine innings vs 1.69). By the career numbers, Bill Chappelle 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.