J. P. Feyereisen vs. Zach Penrod — Career Comparison

Looking at the career totals, J. P. Feyereisen and Zach Penrod are fairly close on the surface numbers. Zach Penrod posted stronger numbers in ERA (2.25 vs 3.27) and home runs allowed (0 per nine innings vs 1.12). J. P. Feyereisen had the advantage in WHIP (1.137 vs 1.750). By the career numbers, Zach Penrod 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.