New York Jets coach Adam Gase announced on Tuesday that quarterback Trevor Siemian is out for the season after being knocked out of the game against the Cleveland Browns

Siemian left the game after suffering a gruesome leg injury on a play where Browns defensive end Myles Garrett was flagged for roughing the passer. According to Gase, Siemian sustained a ligament injury, and he will probably need to undergo surgery.

Siemian started Monday’s game in place of Sam Darnold who is dealing with mono. With Siemian out, it was third-string quarterback Luke Falk who played the remainder of the game. If Falk had to leave the game with an injury, it would have been Le’Veon Bell who would have taken over at quarterback.

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Falk said after the game that it had been a weird week after being promoted from the practice squad, but he wants to do anything moving forward to help the team win.

“It’s been a weird week. A week ago I was on the practice squad, and tonight I’m standing in front of [the media] after playing in a game,” Falk said after Monday’s game. “It’s a weird series of unfortunate events for those two guys, and I just want to do my best and help my team win.”

It’s still unclear how long Darnold will be out for, or if there is any chance he can play this week. If Darnold can’t go, it will be Falk who gets the start, unless he suffers an injury before then.