Nick Greenwood vs. Jason Grilli — Career Comparison

Looking at the career totals, Nick Greenwood and Jason Grilli are fairly close on the surface numbers. Jason Grilli posted stronger numbers in ERA (4.22 vs 5.25) and home runs allowed (1 per nine innings vs 1.5). Nick Greenwood had the advantage in WHIP (1.222 vs 1.405). By the career numbers, Jason Grilli 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.