Frank Killen vs. Denny O'Toole — Career Comparison

On the career pitching numbers, Frank Killen posted a stronger line than Denny O'Toole. Frank Killen posted stronger numbers in ERA (3.78 vs 5.04) and WHIP (1.414 vs 1.747). By the career numbers, Frank Killen 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.