Ties not counted, there are only 2 options every game, win or lose. So for every game, the chance is to win 50% of the time. Assuming you mean 10 games in a row, skipping ties, and winning all of them, its 50% to the power of 10 that all 10 events result in you winning. 0.5^10 = 0.0009765625 So roughly 1 in 1000. This is insane.
so he was almost always winning on rock, except for when people used rock against his rock he then went paper bar that time he went rock again, kinda hilarious the mind games going on where i bet he was far more relaxed than everyone else who was getting in their own heads