J. P. Feyereisen vs. Will Klein — Career Comparison

Looking at the career totals, J. P. Feyereisen and Will Klein are fairly close on the surface numbers. J. P. Feyereisen posted stronger numbers in ERA (3.27 vs 5.16) and WHIP (1.137 vs 1.853). Will Klein had the advantage in home runs allowed (0 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.