I keep rewatching his double move and it's so subtle that there's barely any wasted motion to it and it doesn't slow him down at all. A lot of player have exaggerated double moves. His is so clean. It literally looks like a go route at the first glance. But if you look at it closer, he just changes speed for a split second and he's accelerates back to top speed instantaneously. It causes the corner to hesitate just enough and that's all he needs to blow by you. That is impressive route running.