J. P. Feyereisen vs. Corey Knebel — Career Comparison

Looking at the career totals, J. P. Feyereisen and Corey Knebel are fairly close on the surface numbers. J. P. Feyereisen had the edge in WHIP (1.137 vs 1.282). 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.