What tournament is annually held in Las Vegas since the 1970s?
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.
Rhode Island Open The Rhode Island Open is the Rhode Island state open golf tournament, open to both amateur and professional golfers. It is organized by the Rhode Island Golf Association. It has been played annually since 1929 at a variety of courses around the state.