Antonio Alfonseca vs. J. P. Feyereisen — Career Comparison

Looking at the career totals, Antonio Alfonseca and J. P. Feyereisen are fairly close on the surface numbers. J. P. Feyereisen posted stronger numbers in ERA (3.27 vs 4.11) and WHIP (1.137 vs 1.586). Antonio Alfonseca 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.