NFL injuries: Calvin Johnson, Miles Austin, Giants offensive line all held out of practice

Tim Fuller-USA TODAY Sports

Injury updates for Calvin Johnson, Miles Austin, C.J. Spiller and the Giants' offensive line are making headlines on Thursday.

The Lions are facing major injury question marks on both sides of the ball in Week 5. Wide receiver Calvin Johnson and cornerback Chris Houston both missed their second day of practice on Thursday, according to Dave Birkett of the Detroit Free Press. Houston has been dealing with a hamstring injury, while Johnson has been bothered by a knee injury that he suffered in Week 4's win against the Bears.

With Johnson and Houston nursing injuries, both the cornerback and wide receiver units are pretty thin on talent. Second-year receiver Ryan Broyles is listed as Johnson's backup on the Lions' depth chart, while Bill Bentley would fill Houston's spot if he were to miss the game. Per Birkett, starting safeties Louis Delmas and Glover Quin returned to practice after missing Wednesday's session.

Here are some injury headlines that you may have missed on Thursday:

Giants may be without Chris Snee and David Baas again in Week 5

The Giants continue to deal with injuries to their offensive line. Guard Chris Snee and center David Baas are unlikely to play on Sunday against the Eaglesaccording to Ralph Vacchiano of the New York Daily News. Both Snee and Baas missed New York's Week 4 loss to the Chiefs.

Baas is suffering from a neck injury, and Snee is having hip issues. Brandon Mosley filled in for Snee against the Chiefs, while Jim Cordle took over for Baas. Both would likely be the replacements for the Giants in Week 5 if Snee and/or Baas are unable to play.

Miles Austin continues to miss practice for the Cowboys

Dallas wide receiver Miles Austin may miss another game for the Cowboys. The veteran is not practicing for the second straight day on Thursday, according to ESPN Dallas correspondent Calvin Watkins. Austin missed the Cowboys' Week 4 loss to the Chargers with a hamstring injury.

Rookie Terrence Williams filled in for Austin against San Diego in last week and is likely to draw the start against the Broncos on Sunday. The third-round pick has secured 12 receptions for 131 yards so far this season. Williams had seven catches for 71 yards against the Chargers.

Ahmad Bradshaw injury: Colts RB may need neck surgery, per report

The Colts are fearing the worst when it comes to Ahmad Bradshaw's neck injury. The team believes that Bradshaw may need surgery and would miss the rest of the season if he underwent the procedure, according to the Indianapolis Star's Mike Chappell. However, Indy is hoping the injury can heal with rest and treatment, per Chappell.

Bradshaw was injured in Week 3 during the Colts' win over the 49ers. Trent Richardson carried the load for the Colts in Week 4 while Bradshaw was out, and veteran Donald Brown was given some looks on offense, too. Brown is likely to continue to see more carries and targets as Bradshaw recovers.

C.J. Spiller injury: Bills RB will be true game-time decision, per report

Fantasy football owners will have some big decision to make in Week 5. Bills running back C.J. Spiller is a "true" game-time decision, according to Jamey Eisenberg of CBS Sports. Spiller was injured in Buffalo's Week 4 win over the Ravens when he twisted his ankle on an awkward fall. He returned to the game, but that just made the injury worse.

Spiller is officially listed as questionable on the Bills' injury report. His backup, Fred Jackson, is listed as probable and will likely see the majority of the carries on Thursday night against the Browns.

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