Marty Bystrom vs. John Nelson — Career Comparison

Looking at the career totals, Marty Bystrom and John Nelson are fairly close on the surface numbers. Marty Bystrom posted stronger numbers in WHIP (1.428 vs 1.671) and home runs allowed (0.58 per nine innings vs 1.59). John Nelson had the advantage in ERA (3.65 vs 4.26). 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.