My opinion.............make Cook the starter for the rest of the season and see what he's got. We can be pretty certain that Taylor and Fields are not going to be on this team next season,...... so..... play the guy that might be and give him a chance to earn or lose a spot on the roster and play to win or you won't really know which players to keep and which players to dump. I might add also...........that most of the fault in Cooks 1st ever NFL game, besides it being his 1st ever NFL game, were the fault of his receivers.