Keith Atherton vs. Frank Morrissey — Career Comparison

On the career pitching numbers, Frank Morrissey posted a stronger line than Keith Atherton. Frank Morrissey posted stronger numbers in ERA (2.23 vs 3.99) and WHIP (1.241 vs 1.407). By the career numbers, Frank Morrissey 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.