Arizona Cardinals defensive end J.J. Watt will undergo what is now likely to be season-ending shoulder surgery, sources told ESPN's Adam Schefter on Wednesday night. No date has been set for the surgery.
Watt, in his first year with the first-place club, injured his shoulder in the second quarter Sunday, yet still managed to play the rest of the game with the injury.
Earlier Wednesday, the Cardinals said that Watt had been ruled out of Thursday night's game against the Green Bay Packers after he didn't participate in the Cardinals' only practice of the week on Tuesday.