Henderson Alvarez vs. George O'Donnell — Career Comparison

Looking at the career totals, Henderson Alvarez and George O'Donnell are fairly close on the surface numbers. Henderson Alvarez posted stronger numbers in ERA (3.82 vs 4.53) and WHIP (1.312 vs 1.443). George O'Donnell had the advantage in home runs allowed (0.41 per nine innings vs 0.87). By the career numbers, Henderson Alvarez 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.