Rick Grapenthin vs. Mason Miller — Career Comparison

On the career pitching numbers, Mason Miller posted a stronger line than Rick Grapenthin. Mason Miller posted stronger numbers in ERA (2.81 vs 6.35) and WHIP (0.988 vs 1.588). By the career numbers, Mason Miller 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.