Mike Flanagan vs. Bill Williams — Career Comparison

On the career pitching numbers, Mike Flanagan posted a stronger line than Bill Williams. Mike Flanagan posted stronger numbers in ERA (3.9 vs 5.06) and home runs allowed (0.82 per nine innings vs 1.69). By the career numbers, Mike Flanagan 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.