Bill Greason vs. Michael Wacha — Career Comparison

Looking at the career totals, Bill Greason and Michael Wacha are fairly close on the surface numbers. Michael Wacha posted stronger numbers in ERA (3.89 vs 4.62) and WHIP (1.286 vs 1.717). Bill Greason had the advantage in home runs allowed (0.71 per nine innings vs 1.07). By the career numbers, Michael Wacha 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.