A time control is a mechanism in the tournament play of almost all two-player board games so that each round of the match can finish in a timely way and the tournament can proceed.
The United States Open Championship, commonly known as the U.S. Open, is the annual open national championship of golf in the United States. It is the third of the four major championships in golf, and is on the official schedule of both the PGA Tour and the European Tour. Since 1898 the competition has been 72 holes of stroke play, with the winner being the player with the lowest total number of strokes. It is staged by the United States Golf Association (USGA) in mid-June, scheduled so that, if there are no weather delays, the final round is played on the third Sunday. The U.S. Open is staged at a variety of courses, set up in such a way that scoring is very difficult, with a premium placed on accurate driving. As of 2023, the U.S. Open awards a $20 million purse, the largest of all four major championships.
The United States Chess Federation is the governing body for chess competition in the United States and represents the U.S. in FIDE, the World Chess Federation. US Chess administers the official national rating system, awards national titles, sanctions over twenty national championships annually, and publishes two magazines: Chess Life and Chess Life for Kids. The USCF was founded and incorporated in Illinois in 1939, from the merger of two older chess organizations. It is a 501(c)(3) non-profit organization headquartered in St. Louis, Missouri. Its membership as of 2020 as COVID hit was 97,000; as of July 2022 it is 85,000.
Overtime or extra time is an additional period of play specified under the rules of a sport to bring a game to a decision and avoid declaring the match a tie or draw where the scores are the same. In some sports, this extra period is played only if the game is required to have a clear winner, as in single-elimination tournaments where only one team or players can advance to the next round or win the tournament.
Meijin (名人) means "Brilliant Man". It is the name of the second most prestigious Japanese Go Tournament. It also refers to a traditional Japanese title given to the strongest player of the day during the Edo period.
The WTA Tour is a worldwide top-tier tennis tour for women organized by the Women's Tennis Association. The second-tier tour is the WTA 125K series, and third-tier is the ITF Women's World Tennis Tour. The men's equivalent is the ATP Tour.
The men's major golf championships, commonly known as the major championships, and often referred to simply as the majors, are the most prestigious tournaments in golf. Historically, the national open and amateur championships of Great Britain and the United States were regarded as the majors. With the rise of professional golf in the middle of the twentieth century, the majors came to refer to the most prestigious professional tournaments.
The US Open Series is the name given by the United States Tennis Association (USTA) to a series of North American professional tennis tournaments leading up to and including the US Open. It is part of the "North American hard court season". Emirates sponsored the series in the past, under a deal in place from 2012 to 2016. The series was initially organized in 2004 as a way to focus more attention on American tennis tournaments by getting more of them on domestic television. Until 2004, most summer North American tournaments were not on television, the exceptions being the prominent ATP Tour Masters 1000 events in Canada and Cincinnati. Since the inception of the series, Rafael Nadal is the only tennis player to win Canada, Cincinnati, and the US Open in a calendar year (2013), a feat referred to as the "Summer Slam" or the "North American Hardcourt Slam".
The Siptan was a South Korean Go competition. Begun in 2005, it was held eight times and was discontinued after 2013.
The KBS Cup is a South Korean Go competition.
The Electron-Land Cup is a Go competition.
The U.S. Open Championship is an open national chess championship that has been held in the United States annually since 1900.
John Robert Isner is an American former professional tennis player. He was ranked as high as world No. 8 in singles and No. 14 in doubles by the Association of Tennis Professionals (ATP).
The KGS Go Server, known until 2006 as the Kiseido Go Server, is a game server first developed in 1999 and established in 2000 for people to play Go. The system was developed by William M. Shubert and its code is now written entirely in Java. In Spring of 2017, Shubert transferred ownership to the American Go Foundation.
The ATP Tour is the modern top-level men's professional tennis circuit. It was introduced in 1990 and it's administered by the Association of Tennis Professionals (ATP). All the records listed here are only for the players who played most of their careers on the ATP Tour and they're based on official ATP data. The names of active players appear in boldface. However, no boldface is used in lists exclusively for active players.
The World Open chess tournament is an annual open chess tournament played in most editions in Philadelphia and some editions in New York City. The inaugural event was a huge success played in New York in 1973 with 732 participants, and was won by Walter Browne.
The Open Era is the current era of professional tennis. It began in 1968 when the Grand Slam tournaments allowed professional players to compete with amateurs, ending the division that had persisted since the dawn of the sport in the 19th century. The first open tournament was the 1968 British Hard Court Championships held in April, followed by the inaugural open Grand Slam tournament, the 1968 French Open, a month later. Unless otherwise sourced, all records are based on data from the Association of Tennis Professionals (ATP), the International Tennis Federation (ITF), and the official websites of the four Grand Slam tournaments. All rankings-related records are based on ATP rankings, which began in 1973. The names of active players appear in boldface.
The Qatar Masters Open is an open chess tournament organized by the Qatar Chess Association in Doha, Qatar. Its first edition took place from 25 November to 5 December 2014.
AlphaGo versus Fan Hui was a five-game Go match between European champion Fan Hui, a 2-dan professional, and AlphaGo, a computer Go program developed by DeepMind, held at DeepMind's headquarters in London in October 2015. AlphaGo won all five games. This was the first time a computer Go program had beaten a professional human player on a full-sized board without handicap. This match was not disclosed to the public until 27 January 2016 to coincide with the publication of a paper in the journal Nature describing the algorithms AlphaGo used.
The Eiō (叡王) is one of the eight major titles of professional shogi cosponsored by Fujiya Co. and the Japan Shogi Association (JSA). The tournament initially started out as a non-title tournament in 2015, but was upgraded to major title status in May 2017. The current Eiō title holder is Sōta Fujii.
