FLORHAM PARK, N.J. -- New York Jets cornerback Darrelle Revis, who suffered a concussion in last Sunday's victory over the Buffalo Bills, was cleared Wednesday to resume physical activity -- running and lifting weights -- but he's still not allowed to participate in contact drills.
The Jets, who characterized it as a "mild" concussion, are hopeful that Revis can practice by the end of the week. His status for Sunday's game against the Pittsburgh Steelers remains uncertain.
"As the week goes on, we hope he can progress further and do more things," coach Rex Ryan said. "But obviously, we will follow NFL protocol and lean on the trainers and doctors."
A player who suffers a concussion can't practice or play until he has been cleared by the team doctor and by the team's independent neurological consultant, according to the NFL.
Revis didn't practice Wednesday. He was expected to address the media for the first time since the injury, but he had a change of heart and decided to wait until Thursday, according to the team.
"He says he's fine, and I have faith in him," Jets safety LaRon Landry said.
Ryan said the ideal scenario would be to have Revis practice Thursday on a limited basis, building to a full practice for Friday. Ryan said Revis is "engaged" in meetings, and "that's encouraging to me."
If Revis can't play, he'd be replaced by nickelback Kyle Wilson.
Revis was one of the stars of the season-opening win, making an interception that set up the first touchdown in the 48-28 blowout. Another big contributor, Jeremy Kerley, also is on the Jets' injury report. He missed practice Wednesday with lower-back stiffness.
Kerley was named AFC special teams player of the week after scoring on a 68-yard punt return. He also scored on a 12-yard reception, becoming the first player since Az-Zahir Hakim in 2000 to have receiving and punt-return touchdowns in a season opener.
"I asked him if he came down with the Pittsburgh flu," Ryan joked. "I've seen it happen. They're a very physical football team."
Kerley's injury doesn't appear serious. If he can't play, he'd be replaced by Wilson as the punt returner. His role as the slot receiver would be difficult to fill. Ryan said they could use Clyde Gates, who was recently acquired on waivers from the Miami Dolphins. Gates was inactive for the opener.
Wilson has 11 career starts, but nine of those came as the nickel back. If he has to replace Revis, he'd move from the slot to the outside.
"Obviously, I've been practicing it," Wilson said. "It just comes with my game. It just comes with the territory. I have to be able to know all the positions and I do. It doesn't really change anything for me regarding my focus or attention to detail. Its stuff you prepare for every single week.
Information from The Associated Press was used in this report.