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 November 2013, it was announced that the WSOPE would in the future alternate with the World Series of Poker Asia Pacific (WSOP APAC), which launched in 2013. The WSOPE will now be held only in odd-numbered years, with WSOP APAC conducted in even-numbered years.