George Mullin vs. Bill Williams — Career Comparison

On the career pitching numbers, George Mullin posted a stronger line than Bill Williams. George Mullin posted stronger numbers in ERA (2.82 vs 5.06) and home runs allowed (0.1 per nine innings vs 1.69). By the career numbers, George Mullin 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.