Joel Johnston vs. Javier Lopez — Career Comparison

Looking at the career totals, Joel Johnston and Javier Lopez are fairly close on the surface numbers. Javier Lopez posted stronger numbers in ERA (3.48 vs 4.31) and home runs allowed (0.44 per nine innings vs 1.05). Joel Johnston had the advantage in WHIP (1.296 vs 1.419). By the career numbers, Javier Lopez 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.