Mark Fidrych vs. Emmett O'Neill — Career Comparison

On the career pitching numbers, Mark Fidrych posted a stronger line than Emmett O'Neill. Mark Fidrych posted stronger numbers in ERA (3.1 vs 4.76) and WHIP (1.225 vs 1.709). By the career numbers, Mark Fidrych 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.