Diego Moreno vs. Leon Pettit — Career Comparison

Looking at the career totals, Diego Moreno and Leon Pettit are fairly close on the surface numbers. Diego Moreno posted stronger numbers in ERA (5.06 vs 5.18) and WHIP (1.250 vs 1.743). Leon Pettit had the advantage in home runs allowed (0.56 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.