Cooper, who put himself in hot water in the locker room and elsewhere when he was captured on video making racist slurs and left the team briefly in August to deal with the aftermath, was shaken and sat out some one-on-one drills following the dust up.
The Carolina Panthers have voted quarterback Cam Newton a team captain, coach Ron Rivera said.
Newton, the No. 1 pick in the 2011 draft, is in a captain's role for the first time in his NFL career.
Atlanta Falcons wide receiver Roddy White has said he will play in Sunday's season opener against the New Orleans Saints despite sitting out the team's last two pre-season games with a sprained left ankle.
White, who has six consecutive 1,000-yard receiving seasons, declared on Thursday that he is "100 per cent certain" he will play.
Denver Broncos starting tight end Julius Thomas is expected to start in Thursday's season opener against the Baltimore Ravens despite being arrested last week.
Thomas was arrested for failing to appear in court for a traffic citation issued earlier this year, the Denver Post reported.
New York Jets wide receiver Santonio Holmes sat out practice for what head coach Rex Ryan called a scheduled day off as the wide receiver returns from foot surgery 10 months ago.
"I certainly hope so," Ryan said when asked if Holmes will play in Sunday's season opener against the Tampa Bay Buccaneers.
San Francisco 49ers quarterback Colin Kaepernick was rarely hit by the Green Bay Packers when they met in the 2012 play-offs, but coach Jim Harbaugh asked the league to look into comments from defenders that he believes implies targeting.
The Packers, most notably linebacker Clay Matthews, said they plan to put a lick on read-option quarterbacks when given a shot. Matthews said in an interview on ESPN radio this week that officials have told them quarterbacks are fair game when carrying out run fakes.
Pro Bowl safety Jairus Byrd might not be in uniform on Sunday because of a foot injury, and he's not certain he wants to wear the Buffalo Bills colours much longer based on a lingering animosity over his contract.
The Buffalo News reported that Byrd wants to be traded. Byrd missed almost the entire training camp and did not play in the preseason due to a contract squabble, and has a sore foot.
Rookie defensive end Ziggy Ansah has returned to practice and could be in the Detroit Lions' lineup Sunday.
The defensive end appeared to take a positive step Wednesday. He did not practice, but he took part in the entire warm-up period and then ran sprints from sideline to sideline under the supervision of strength coach Jason Arapoff.
The Dallas Cowboys have released guard Nate Livings from injured reserve and reached an injury settlement with him.
The Indianapolis Colts have waived tackle Emmett Cleary from injured reserve and reached an injury settlement with him.
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