Matt Manning vs. George O'Donnell — Career Comparison

Looking at the career totals, Matt Manning and George O'Donnell are fairly close on the surface numbers. Matt Manning posted stronger numbers in ERA (4.43 vs 4.53) and WHIP (1.287 vs 1.443). George O'Donnell had the advantage in home runs allowed (0.41 per nine innings vs 1.06). By the career numbers, Matt Manning 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.