 Dandalos later brought the idea to legendary casino owner Benny Binion.After further urging by Pearson, Amarillo Slim, and Doyle Brunson, all of whom felt that such a tournament would create great side (cash) game action, Binion founded the World Series of Poker in 1970.Pearson participated in the first World Series of Poker that year along with Amarillo Slim, Doyle Brunson, Sailor Roberts, Crandell Addington, and Carl Cannon.