George O'Donnell vs. Abraham Tolosa — Career Comparison

Looking at the career totals, George O'Donnell and Abraham Tolosa are fairly close on the surface numbers. Abraham Tolosa had the edge in ERA (3.46 vs 4.53). By the career numbers, Abraham Tolosa 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.