John Firth vs. William Parson — Career Comparison

Looking at the career totals, John Firth and William Parson are fairly close on the surface numbers. William Parson posted stronger numbers in ERA (4.92 vs 8) and WHIP (1.856 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 0.6). By the career numbers, William Parson 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.