Justin James vs. Gregg Olson — Career Comparison

Looking at the career totals, Justin James and Gregg Olson are fairly close on the surface numbers. Gregg Olson posted stronger numbers in ERA (3.46 vs 4.5) and WHIP (1.442 vs 2.750). Justin James had the advantage in home runs allowed (0 per nine innings vs 0.62). By the career numbers, Gregg Olson 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.