World Series of Poker
The World Series of Poker (WSOP) is a series of poker tournaments held annually in Las Vegas and, since 2005, sponsored by Caesars Entertainment Corporation (known as Harrah's Entertainment until 2010). It dates its origins to 1970, when Benny Binion invited seven of the best-known poker players to the Horseshoe Casino for a single tournament, with a set start and stop time, and a winner determined by a secret ballot of the seven players.
World Series of Poker
In 2015, the WSOP International Circuit was launched, with rounds in Canada, Latin America, the Caribbean, Europe, Asia-Pacific and Africa. The winners of each tournament join the WSOP Circuit winners to play the WSOP Global Casino Championship. The International Circuit has expanded to 13 tournaments for the 2017/18 season.