On Monday, coach Rex Ryan admitted that Revis has a concussion. He called it a "mild concussion" which is such a ridiculous term that the NFL should start fining coaches for using it. ("Minor surgery" is another annoying one.)
"What I'll say is, with me I'll always lean on our trainers and our doctors," Ryan said, via The Star-Ledger. "With any head injury and any injury at all, but especially a head injury, I'm going to err on the side of caution. We'll see how he progresses."
It sounds like Revis' status against the Pittsburgh Steelers in Week 2 is up in the air. Players routinely miss at least a week after a being diagnosed with a concussion.