 In addition to his career as a poker player, he was also a renowned contract bridge player.Roberts participated in the first World Series of Poker in 1970 along with Amarillo Slim, Doyle Brunson, Puggy Pearson, Crandell Addington, and Carl Cannon.Roberts won his first WSOP bracelet at the 1974 World Series of Poker in the $5,000 Deuce to Seven Draw event.