Yankees first baseman Doug Mientkiewicz will be placed on the 15-day disabled list before the game Sunday, a day after colliding with Boston's Mike Lowell on an errant throw by shortstop Derek Jeter. Mientkiewicz was taken from the field on a cart after banging his head on Lowell's hip while trying to one-hop Jeter's throw in the seventh inning. Mientkiewicz was taken to Massachusetts General Hospital, where tests Saturday night revealed a mild concussion, cervical sprain and a fractured bone in his right wrist. He spent the night in the hospital for observation.