J.J. Russell: Everything you need to know

Russell was placed on injured reserve by the Cardinals on Tuesday, Darren Urban of the team's official website reports. Russell suffered a concussion at practice in late July, ultimately remaining sidelined throughout the entirety of the preseason. The linebacker is now set to miss the entirety of the 2025 campaign while on IR, unless he's able to reach an injury settlement with the team.

Russell was placed in concussion protocol Friday, Tyler Drake of ArizonaSports.com reports. Russell suffered a head and neck injury during Thursday's practice, which led to him being carted off the field. He was taken to a local hospital for evaluation, but he was cleared to re-join training camp after undergoing tests. Russell will be limited in his activities until he is able to clear the league's five-step concussion protocol.

Russell (head) has re-joined the Cardinals at training camp after being released from the hospital. In a scary moment during practice Thursday, Russell suffered a head and neck injury and was taken to a local hospital for testing and evaluation. The 26-year-old reportedly had movement in all his extremities following the collision that caused the injury, and further testing indicated that he was okay to return to camp. It's not yet clear how long, if at all, Russell will need to be held out of practice moving forward.