J. P. Feyereisen vs. Roy Lee Jackson — Career Comparison

Looking at the career totals, J. P. Feyereisen and Roy Lee Jackson are fairly close on the surface numbers. J. P. Feyereisen posted stronger numbers in ERA (3.27 vs 3.77) and WHIP (1.137 vs 1.354). Roy Lee Jackson had the advantage in home runs allowed (0.81 per nine innings vs 1.12). By the career numbers, J. P. Feyereisen 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.