The Rams were confident enough in Henderson to cut Kelly and Davis so I question how much he is struggling with the playbook. In McVay offense the 3rd RB doesn't play. Now we have an expectation that there will be a special package to get Henderson in the game but so far we haven't seen that. Last game Brown only go 6 carries so where is the room for Henderson to play? I figure they will work him in as the season progresses but I think it is pure speculation that he is a slow study which is why he isn't playing.