McDonagh took a puck to the face and didn't finish Tuesday's game versus the Bruins, Gabby Shirley of FanDuel Sports Network Florida & Sun reports.
McDonagh ended up with 14:38 of ice time prior to his exit. The 35-year-old's status was not updated after the contest. If McDonagh can't play Thursday against the Ducks, the Lightning will likely need to make a roster move for a defenseman.