Marty Bystrom vs. Jim Colborn — Career Comparison

Looking at the career totals, Marty Bystrom and Jim Colborn are fairly close on the surface numbers. Jim Colborn posted stronger numbers in ERA (3.8 vs 4.26) and WHIP (1.337 vs 1.428). Marty Bystrom had the advantage in home runs allowed (0.58 per nine innings vs 0.86). By the career numbers, Jim Colborn 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.