Arizona Cardinals quarterback Kyler Murray will miss the rest of the season with a torn ACL, coach Kliff Kingsbury said Tuesday afternoon.

Murray went down in Monday night’s 27-13 loss to the New England Patriots after a 3-yard run on the third play of the game. He was carted off the field and did not return. An MRI on Tuesday confirmed the injury.

Murray will get additional opinions and tests done on his knee, said Kingsbury, who expects to get a final report on the scope of the damage on Wednesday. However, Kingsbury said the Cardinals haven’t discussed a timeframe for Murray’s return. Kingsbury did point out that return timetables vary from player to player. Nor have the Cardinals discussed where Murray’s rehab will take place, either in Arizona or in Dallas, and who will oversee it, the Cardinals’ medical staff or Murray’s own doctors and trainers.

Backup QB Colt McCoy underwent testing for a head injury and reports say the results were encouraging and McCoy is expected to be able to start Sunday against the Denver Broncos.