E.J. Gaines got clipped on this flying interception attempt by his own teammate. He was down on the turf for several minutes, and appeared to have blood on his lip when he finally got up. I would not be surprised if he also had a concussion from a glancing blow off the helmet, and in fact, Laura Okmin updated and said he was being evaluated for a head injury.
[GIF by @mshamburger1]