Unknown Nelson vs. Larry Yellen — Career Comparison

Looking at the career totals, Unknown Nelson and Larry Yellen are fairly close on the surface numbers. Larry Yellen posted stronger numbers in ERA (6.23 vs 9) and WHIP (1.769 vs 2.000). Unknown Nelson had the advantage in home runs allowed (0 per nine innings vs 1.38). By the career numbers, Larry Yellen 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.