Dellin Betances vs. Unknown Nelson — Career Comparison

Looking at the career totals, Dellin Betances and Unknown Nelson are fairly close on the surface numbers. Dellin Betances posted stronger numbers in ERA (2.53 vs 9) and WHIP (1.085 vs 2.000). Unknown Nelson had the advantage in home runs allowed (0 per nine innings vs 0.59). By the career numbers, Dellin Betances 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.