Marty Bystrom vs. Bill Williams — Career Comparison

Looking at the career totals, Marty Bystrom and Bill Williams are fairly close on the surface numbers. Marty Bystrom posted stronger numbers in ERA (4.26 vs 7.71) and WHIP (1.428 vs 1.714). Bill Williams had the advantage in home runs allowed (0 per nine innings vs 0.58). By the career numbers, Marty Bystrom 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.