Kevin Kelly vs. William Parson — Career Comparison

Looking at the career totals, Kevin Kelly and William Parson are fairly close on the surface numbers. Kevin Kelly posted stronger numbers in ERA (3.55 vs 4.92) and WHIP (1.088 vs 1.856). William Parson had the advantage in home runs allowed (0.6 per nine innings vs 1.02). By the career numbers, Kevin Kelly 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.