This guy is slow coming out of his cuts. That is the main reason he gets little to zero separation when running routes versus man coverage. Nearly all his targets were when he was running a straight line type of route, using his size to out jump or shield the CB away from the ball. Even then he rarely came down with the ball. The coaches know he is a crap route runner and don't even try giving him routes that involve digging his foot in the grass to pivot his body. This makes him a one trick pony and that's why he sucks. He has great physical traits, but it's not about that for a WR. It's about coming in and out of your cuts sharply, while not losing speed. He can improve, but will require good coaching and many have mentioned how questionable the 49er WR coaches are.