Hank Aguirre vs. George O'Donnell — Career Comparison

Looking at the career totals, Hank Aguirre and George O'Donnell are fairly close on the surface numbers. Hank Aguirre posted stronger numbers in ERA (3.24 vs 4.53) and WHIP (1.258 vs 1.443). George O'Donnell had the advantage in home runs allowed (0.41 per nine innings vs 0.8). By the career numbers, Hank Aguirre 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.