Jamie Arnold vs. Unknown Nelson — Career Comparison

Looking at the career totals, Jamie Arnold and Unknown Nelson are fairly close on the surface numbers. Jamie Arnold posted stronger numbers in ERA (5.73 vs 9) and WHIP (1.652 vs 2.000). Unknown Nelson had the advantage in home runs allowed (0 per nine innings vs 0.58). By the career numbers, Jamie Arnold 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.