The Yankees activated RHP Adam Warren from the disabled list on Friday.
Warren has not pitched since Sept. 1 due to back spasms. He threw two innings in a simulated game on Tuesday, and manager Joe Girardi told New York Daily News' Mike Mazzeo and Nicholas Parco "it's important that we get him into a game to find out to see where he's at."
Warren, 30, is 3-2 with a 2.40 ERA in 45 relief appearances this season. He allowed five runs in 4 1/3 innings over his last five outings since Aug. 19, but recorded a 0.65 ERA from May 27 to Aug. 16.