They don't explain the Rams getting beat worse in the second half where there were no Cooper mistakes than they did in the first half.

And yes, Cooper did play last week against the 9ers..........as a starting WR for the first time all season. Played 64 snaps, by far the most of the season for him. He certainly practiced differently that week because of it too. A change in process for Cooper just as for all the other players. You keep incorrectly saying it wasn't a change for him since "he played" but it most certainly was a change for him.