Jose Alvarado vs. Unknown Nelson — Career Comparison

Looking at the career totals, Jose Alvarado and Unknown Nelson are fairly close on the surface numbers. Jose Alvarado posted stronger numbers in ERA (3.47 vs 9) and WHIP (1.368 vs 2.000). Unknown Nelson had the advantage in home runs allowed (0 per nine innings vs 0.64). By the career numbers, Jose Alvarado 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.