Here’s Looking At You, Deck

At a Grand Prix Trial you are running at your local store, a spectator points out a player to you and asks you to watch the way he shuffles. Before the player's match, you witness him riffle shuffle with the cards facing himself once, and then once with the cards facing away. He repeats this cycle several more times, once towards himself, once away, before presenting his deck to his opponent. You step in and ask the player some questions about his shuffling method. He answers that he always shuffles