O'Reilly aggravated his mid-body injury in Friday's loss to the Devils, leaving the game 3:49 into the third period.

Apparently, this is related to the ailment that kept O'Reilly out of Wednesday's game against the Senators. Without O'Reilly, the Sabres shifted Sam Reinhart to center with Evander Kane and Matt Moulson on the wings. The Sabres will face the Devils again Saturday, but it's unknown at this point whether they'll have O'Reilly available. Several of the team's forwards are ailing, and Buffalo can ill-afford to lose another key playmaker like No. 90.