Biggest NFL injuries of Week 1

— -- Here are the most significant NFL players who got banged up in Week 1.

Keenan Allen, WR, San Diego Chargers:?Allen went down with a noncontact knee injury as he was coming out of a break in the second quarter. He stayed down on the field for a while before being carted off the field, showing some emotion as he was taken to the locker room. Allen, who had six catches for 63 yards in the first half, missed the last eight games last season?with a lacerated kidney. Allen missed the remainder of the game and will undergo an MRI on Monday.

Russell Wilson, QB, Seattle Seahawks:?Wilson hurt his ankle in the third quarter after getting sacked by Ndamukong Suh. The quarterback, who led the Seahawks on a game-winning drive in the fourth quarter, said afterward he was "pretty limited" down the stretch. According to coach Pete Carroll, Wilson has a sprained ankle and is expected to play on Sunday.

Robert Griffin III, QB, Cleveland Browns:?Griffin appeared to hurt his arm late in the Browns' game against the Eagles, and the QB confirmed after the game that he has a sprained left shoulder. Griffin suffered the injury on a?hit he took late in the game on the sideline at the end of a run. According to ESPN Browns reporter Pat McManamon, Griffin?was not using his left arm a lot as he dressed in the locker room. ESPN's Adam Schefter reported on Monday that Griffin has a fractured coracoid bone in his left shoulder; he could be out for the season.

Brian Cushing, LB, Houston Texans: Cushing was carted to the locker room in the first quarter with a knee injury. The team ruled him out in the second half. Cushing -- who suffered knee ligament tears in both 2012 and 2013 -- had a good preseason and training camp, according to ESPN Texans reporter Sarah Barshop. A source told ESPN's Josina Anderson that Cushing suffered a Grade 2 MCL sprain.

Julio Jones and? Mohamed Sanu , WRs, Atlanta Falcons: Both wide receivers tweaked their ankles on Sunday. Jones said he reinjured his left ankle after hurting it in the preseason, adding that he isn't worried. Sanu, meanwhile, could be seen limping heavily through the locker room after the game, according to ESPN Falcons reporter Vaughn McClure.

Delvin Breaux, CB, New Orleans Saints:?The Saints' up-and-coming cornerback suffered a left lower-leg injury in the second quarter and tried to play through it, but he reinjured himself and was carted to the locker room. A source told ESPN's Mike Triplett that Breaux broke his fibula. He's expected to miss six weeks.

Cordy Glenn, LT, Buffalo Bills:?Glenn suffered an ankle injury in the first half after getting rolled up on. The team announced he would not return as? Cyrus Kouandjio replaced him in the starting lineup. Glenn had a walking boot on as he left the locker room on Sunday.?

Sam Shields, CB, Green Bay Packers:?Shields left late in the fourth quarter with a possible concussion?after colliding with Jaguars running back? T.J. Yeldon. According to ESPN Packers reporter Rob Demovsky, the team did not have any further update on Shields' status before heading back to Green Bay from Jacksonville. The cornerback missed the final three games of last season with a concussion.

Menelik Watson, RT, Oakland Raiders:?Watson suffered a groin injury just before halftime. He jogged off the field with a slight limp after being evaluated by the team's medical staff on the field for a few minutes. Watson never returned to the game, and the Raiders also lost his replacement? Matt McCants to injury later in the game.?

Jeremy Maclin, WR, Kansas City Chiefs: Maclin made a big catch on the Chiefs' tying drive late in the fourth quarter, but he sustained a helmet-to-helmet hit on the play and was evaluated for a concussion shortly thereafter. Maclin returned to the field for the Chiefs' winning play in overtime after missing the beginning of the drive. After the game, coach Andy Reid said Maclin passed the concussion test, according to ESPN Chiefs reporter Adam Teicher.

Orlando Scandrick, CB, Dallas Cowboys: Scandrick limped to the locker room with a hamstring injury after getting beat deep by Giants WR Odell Beckham Jr.?in the second quarter. Scandrick returned to the game in the second half.