Titans middle linebacker Colin McCarthy suffered a concussion in Sunday’s loss to Jacksonville. He didn’t practice on Wednesday and Titans coach Mike Munchak said his status for Sunday will be determined by how he progresses the next couple of days. “It’s one of those things where he seems to be getting better and seems to be fine, but I don’t know how that will all work out,†Munchak said. McCarthy’s concussion wasn’t diagnosed until after Sunday’s contest. “I think that happens a lot (to players),†Munchak said. “Guys play and unless you’re knocked out or on the ground or something … it’s hard (to diagnose a concussion).†Source: The Tennessean