Jason Grilli vs. Mark Hamburger — Career Comparison

Looking at the career totals, Jason Grilli and Mark Hamburger are fairly close on the surface numbers. Mark Hamburger posted stronger numbers in WHIP (1.000 vs 1.405) and home runs allowed (0 per nine innings vs 1). Jason Grilli had the advantage in ERA (4.22 vs 4.5). By the career numbers, Mark Hamburger 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.