J. D. Hammer vs. Denny O'Toole — Career Comparison

Looking at the career totals, J. D. Hammer and Denny O'Toole are fairly close on the surface numbers. J. D. Hammer posted stronger numbers in ERA (4.38 vs 5.04) and WHIP (1.538 vs 1.747). Denny O'Toole had the advantage in home runs allowed (0.89 per nine innings vs 1.15). By the career numbers, J. D. Hammer 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.