Brady missed practice this week and the NFL Network reported Friday he had suffered a sprained left shoulder.
Coach Bill Belichick declined to be specific Friday, answering a question concerning what Brady could do in practice by saying -- "play quarterback, the usual thing."
Belichick was asked whether Brady had been injured earlier in the week.
"I think we covered that," he said.
New England has won the AFC East title and has clinched a first-round playoff bye. A victory over Buffalo Sunday would give the Patriots home-field advantage throughout the playoffs.
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