Mitchell Parker vs. William Sheppard — Career Comparison

On the career pitching numbers, William Sheppard posted a stronger line than Mitchell Parker. William Sheppard posted stronger numbers in ERA (2.9 vs 5.02) and WHIP (1.226 vs 1.372). By the career numbers, William Sheppard 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.