Mark Ross vs. Mike Willis — Career Comparison

On the career pitching numbers, Mark Ross posted a stronger line than Mike Willis. Mark Ross posted stronger numbers in ERA (3.83 vs 4.59) and WHIP (1.087 vs 1.524). By the career numbers, Mark Ross 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.