William Parson vs. David Phelps — Career Comparison

Looking at the career totals, William Parson and David Phelps are fairly close on the surface numbers. David Phelps posted stronger numbers in ERA (3.8 vs 4.92) and WHIP (1.337 vs 1.856). William Parson had the advantage in home runs allowed (0.6 per nine innings vs 0.94). By the career numbers, David Phelps 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.