Here are the most significant NFL players who got banged up in Week 8:

Spencer Ware, RB, Kansas City Chiefs: Ware suffered a concussion Sunday and did not return to the game. With Jamaal Charles out, Ware assumed the Chiefs' workhorse role. With Ware also banged up, Kansas City's running back corps is getting very thin.

Alex Smith, QB, Kansas City Chiefs: Smith took a big hit from Colts LB Edwin Jackson on the Chiefs' opening drive of the game. Smith went into the locker room to be evaluated for a concussion and was cleared to return not long thereafter. Early in the second half, Smith's head bounced off the turf, and after staying down on the field for a while, he was taken back into the locker room and ruled out for the remainder of the game with a concussion. The story took a strange turn on Monday, when the Chiefs indicated that they don't believe Smith did suffer any head trauma. "That's what an unaffiliated [neurological consultant] believes, that's what [team doctor Mike] Monaco believes, that's what I believe now," trainer Rick Burkholder said Monday. "He's been absolutely asymptomatic."

Tyrann Mathieu, CB, Arizona Cardinals: Mathieu, who's still trying to get back to his old self after tearing his ACL late last season, sustained a shoulder injury Sunday and did not return to the game. The Cardinals have a bye in Week 9, but Mathieu is expected to miss 3-6 weeks.

Barry Church and Morris Claiborne, DBs, Dallas Cowboys: The Cowboys lost both Church and Claiborne on Sunday night with injuries. According to executive vice president Stephen Jones, Church fractured his forearm, while a source told ESPN's Todd Archer than Claiborne suffered a possible sports hernia in the fourth quarter. Both players will undergo further testing on Monday.

Jacquizz Rodgers, RB, Tampa Bay Buccaneers: Rodgers limped off the field late in the fourth quarter of the Buccaneers' close game against the Raiders. The team announced that he has a sprained foot, and Rodgers was seen on Monday wearing a walking boot. The Bucs are now really short-handed at running back, with starter Doug Martin nursing a hamstring injury.

Jatavis Brown, LB, San Diego Chargers: One of the league's top rookies, Brown suffered a right knee injury in the fourth quarter. He stayed down for a while and was examined by trainers before walking off the field under his own power. He did not return to the game.

Jacob Tamme, TE, Atlanta Falcons: Tamme landed hard on his shoulder in the first quarter and walked gingerly off the field while holding his right arm. The Falcons' medical staff took Tamme directly to the locker room, and the team ruled him out for the game.

Martellus Bennett, TE, New England Patriots: Bennett entered this week with a nagging ankle injury, and he limped off the field on several occasions Sunday.

Vontae Davis, CB, Indianapolis Colts: Davis missed time earlier this season with an ankle injury, and he left Sunday's game against the Chiefs with a concussion.

Lorenzo Alexander, OLB, Buffalo Bills: The NFL's sack leader suffered a hamstring injury in the first half and was ruled out for the remainder of the game. It's another big injury for the Bills, who were already without RB LeSean McCoy, WR Marquise Goodwin and WR Sammy Watkins entering Week 8.

Will Fuller, WR, Houston Texans: Fuller left the Texans' game against the Lions because of a leg injury in the second half. Fuller got off to a hot start this season, but a hamstring injury suffered in Week 5 derailed some of his momentum.

Ryan Kalil, C, Carolina Panthers: The Panthers' Pro Bowl center left Sunday's game because of a shoulder injury. The team ruled him out for the game.

Sean Smith, CB, Oakland Raiders: Smith suffered a shoulder injury on the second play of the Raiders' game against the Buccaneers. In breaking up a pass to Mike Evans, Smith got his left arm caught underneath the Bucs wideout, and both players landed on the grass. The CB was writhing on the ground but walked off the field under his own power. The team eventually ruled him out for the rest of the game.

Devontae Booker, RB, Denver Broncos: Booker, who got his first career start Sunday after C.J. Anderson underwent knee surgery this week, left the game in the first quarter because of a shoulder injury. The team listed him as questionable, but he came back in the game after a short absence.

T.Y. Hilton, WR, Indianapolis Colts: Hilton went to the locker room with a hamstring injury in the first quarter, but he returned to the game later in the first half. Hilton has three games this season with 130-plus yards and a touchdown.

DeSean Jackson, WR, Washington Redskins: Jackson left the Redskins' game in London to be evaluated for a concussion. The team said he did not suffer a concussion, but he was questionable to return with a "head contusion." Jackson did not return to the game.

Ryan Fitzpatrick, QB, New York Jets: Fitzpatrick scrambled for a first down early in the first quarter and saw his helmet go flying following a hit from Browns CB Briean Boddy-Calhoun. Officials mandated that he get checked for a concussion, but Fitzpatrick missed only one play.