Dan Marion vs. Bill Williams — Career Comparison

On the career pitching numbers, Dan Marion posted a stronger line than Bill Williams. Dan Marion posted stronger numbers in ERA (3.42 vs 5.06) and home runs allowed (0.06 per nine innings vs 1.69). By the career numbers, Dan Marion 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.