(The Sports Xchange) - Tennessee Titans quarterback Marcus Mariota, who has been limited in practice all week with a left hamstring strain, is listed as questionable for Sunday's road game against the Miami Dolphins.
Titans coach Mike Mularkey said Mariota will be a game-time decision.
Mariota did not start the second half of last Sunday's game against the Houston Texans.
If Mariota can't go, the starting duties will fall to Matt Cassel, who struggled in the second half of Sunday's 57-14 loss at Houston with two interceptions (including a pick-six) and a lost fumble on a strip-sack.
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Montgomery, who sustained the injury during a 35-14 win over Chicago on Sept. 28, initially expressed optimism that he would play for the Packers (3-1) in their game against the Cowboys (2-2) on Sunday.
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In addition to Richburg (concussion) and Perkins (ribs), defensive end Olivier Vernon could miss the contest with an ankle injury. Vernon, who was listed as questionable on Friday's injury report, did not practice this week after aggravating the injury last Sunday against the Tampa Bay Buccaneers.
The Giants also listed defensive end Jason Pierre-Paul, who is dealing with a shoulder injury, as questionable. Wide receiver Odell Beckham Jr. was not given an injury designation despite leaving practice early Thursday with cramping.
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Philadelphia Eagles defensive tackle Fletcher Cox was ruled out for Sunday's home game against the Arizona Cardinals with a calf injury.
Cox will be sidelined for a second straight week. Beau Allen will replace Cox in the starting lineup, coach Doug Pederson said.
Running back Wendell Smallwood was listed as questionable after he suffered a knee injury against the Los Angeles Chargers last Sunday. He has not practiced all week and likely will be a game-time decision.
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Washington Redskins cornerback Josh Norman is expected to be sidelined about a month with a fractured rib.
Norman confirmed the four-week timeline via Twitter: "But 4weeks."
Norman sustained the injuries while making a tackle in the 29-20 loss to the Kansas City Chiefs on Monday night.
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Pittsburgh Steelers All-Pro wide receiver Antonio Brown admitted he needs to control his emotions after he threw a sideline temper tantrum during last Sunday's game when Ben Roethlisberger failed to target him on a play.
After not getting the ball downfield, Brown flipped a Gatorade cooler and had words with offensive coordinator Todd Haley in Baltimore, where the Steelers won 26-9 to move to 3-1.
Praising Roethlisberger as "the general of our team," Brown acknowledged he approached Big Ben earlier in the week to clear the air, along with Haley.
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The Tampa Bay Buccaneers are expected to hold tryouts for kickers in the aftermath of Nick Folk missing three field goals in the 19-14 loss to the New England Patriots on Thursday night.
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The Indianapolis Colts signed free agent tight end Henry Krieger-Coble and waived center Adam Redmond.
Krieger-Coble spent time on the Colts' practice squad earlier this season.
Redmond has played in all four games for Indianapolis this season.
(Editing by Gene Cherry)