The Yankees activated Grisham (hamstring) from the 15-day injured list Tuesday, Jon Morosi of MLB Network reports.
Grisham has been sidelined for the past three-plus weeks with a strained right hamstring, but he's advanced workouts to the point that the Yankees felt comfortable including him on their playoff roster. With Aaron Judge (calf) still out, the Yankees could use Grisham in center field and Spencer Jones in right field against right-handers.