Poker will be considered to be born within the United States within the second half of the twentieth century. For many years poker has been just one of existing gambling's but everything changed in 1970. The owner of a legendary casino "Binion's Horseshoe" in Las Vegas, a great fun of poker and an eminent player Benni Binion and his son Jack Binion organized within their quality online casino a tournament between the most known US players. In the tournament took part six players that have been competing during 7 days in gambling of different kinds of poker. A champion was determined by voting and that was Johnny Moss. This tournament provoked a poker boom among people and attracted more audience. Lots of people expressed their will to take part in the next similar tournament.

Binion took decision to continue organizing such tournaments and united them under the name World Series of Poker (WSOP). Annually the number of WSOP participants grew in geometric progression.