Jason Johnson vs. Corey Oswalt — Career Comparison

Looking at the career totals, Jason Johnson and Corey Oswalt are fairly close on the surface numbers. Jason Johnson posted stronger numbers in ERA (4.99 vs 5.89) and home runs allowed (1.2 per nine innings vs 1.81). Corey Oswalt had the advantage in WHIP (1.437 vs 1.506). By the career numbers, Jason Johnson 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.