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
Starting in 2005, the WSOP began the World Series of Poker Circuit, a satellite series held at Harrah's-owned properties in the United States. In addition to the $10,000 buy-in tournament at each site, qualifying players became eligible for a revamped Tournament of Champions. The 2005 TOC, made up of the top twenty qualifying players at each circuit event, along with the final table from the 2005 Main Event and the winners of nine or more bracelets (Johnny Chan, Doyle Brunson, and Phil Hellmuth) would participate in the revamped TOC at Caesars Palace. Mike Matusow won the first prize of $1 million (US), and all the players at the final table were guaranteed a minimum of $25,000 for the eighth and ninth-place finishers.