Jason Grilli vs. Curt Kaufman — Career Comparison

On the career pitching numbers, Jason Grilli posted a stronger line than Curt Kaufman. Jason Grilli posted stronger numbers in ERA (4.22 vs 4.48) and home runs allowed (1 per nine innings vs 1.56). 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.