William Parson vs. Pop-boy Smith — Career Comparison

On the career pitching numbers, Pop-boy Smith posted a stronger line than William Parson. Pop-boy Smith posted stronger numbers in ERA (4.21 vs 4.92) and WHIP (1.447 vs 1.856). By the career numbers, Pop-boy Smith 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.