Frank Morrissey vs. Mason Thompson — Career Comparison

On the career pitching numbers, Frank Morrissey posted a stronger line than Mason Thompson. Frank Morrissey posted stronger numbers in ERA (2.23 vs 5.21) and WHIP (1.241 vs 1.667). 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.