John Allen vs. Diego Moreno — Career Comparison

Looking at the career totals, John Allen and Diego Moreno are fairly close on the surface numbers. Diego Moreno posted stronger numbers in ERA (5.06 vs 18) and WHIP (1.250 vs 2.000). John Allen had the advantage in home runs allowed (0 per nine innings vs 1.13). By the career numbers, Diego Moreno 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.