It's not a good start to the week for the Browns who host the Broncos on Thursday night. Beckham and Mayfield were also listed as did not practice. This will be something to monitor as the week goes on. With Kareem Hunt already out, the loss of Chubb would force Johnson and Felton into the lineup, perhaps both in significant roles. If Mayfield can't go, Keenum would get the start at QB.