Juan Acevedo vs. Unknown Nelson — Career Comparison

Looking at the career totals, Juan Acevedo and Unknown Nelson are fairly close on the surface numbers. Juan Acevedo posted stronger numbers in ERA (4.33 vs 9) and WHIP (1.504 vs 2.000). Unknown Nelson had the advantage in home runs allowed (0 per nine innings vs 1.14). By the career numbers, Juan Acevedo 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.