David Hernandez vs. Chris Piersoll — Career Comparison

Looking at the career totals, David Hernandez and Chris Piersoll are fairly close on the surface numbers. Chris Piersoll posted stronger numbers in ERA (2.38 vs 4.12) and home runs allowed (0 per nine innings vs 1.22). David Hernandez had the advantage in WHIP (1.335 vs 1.588). By the career numbers, Chris Piersoll 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.