Plácido Bernal vs. P. J. Walters — Career Comparison

Looking at the career totals, Plácido Bernal and P. J. Walters are fairly close on the surface numbers. P. J. Walters posted stronger numbers in ERA (6.28 vs 8.08) and WHIP (1.592 vs 1.772). Plácido Bernal had the advantage in home runs allowed (1.49 per nine innings vs 1.72). By the career numbers, P. J. Walters 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.