The Grand Slam in tennis is the achievement of winning all four major championships in one discipline in a calendar year. In doubles, a Grand Slam may be achieved as a team or as an individual with different partners. Winning all four major championships consecutively but not within the same calendar year is referred to as a "non-calendar-year Grand Slam", while winning the four majors at any point during the course of a career is known as a "Career Grand Slam".
The International Tennis Federation (ITF) is the governing body of world tennis, wheelchair tennis, and beach tennis. It was founded in 1913 as the International Lawn Tennis Federation by twelve national tennis associations. As of 2016, there are 211 national and six regional associations that make up the ITF's membership.
The Association of Tennis Professionals (ATP) is the governing body of the men's professional tennis circuits – the ATP Tour, the ATP Challenger Tour and the ATP Champions Tour. It was formed in September 1972 by Donald Dell, Jack Kramer, and Cliff Drysdale to protect the interests of professional tennis players, and Drysdale became the first president. Since 1990 the association has organized the ATP Tour, the worldwide tennis tour for men and linked the title of the tour with the organization's name. It is the governing body of men's professional tennis. In 1990 the organization was called the ATP Tour, which was renamed in 2001 as just ATP and the tour being called ATP Tour. In 2009 the name of the tour was changed again and was known as the ATP World Tour, but changed again to the ATP Tour by 2019. It is an evolution of the tour competitions previously known as Grand Prix tennis tournaments and World Championship Tennis (WCT). The ATP's global headquarters are in London. ATP Americas is based in Ponte Vedra Beach, Florida; ATP Europe is headquartered in Monaco; and ATP International, which covers Africa, Asia and Australasia, is based in Sydney, Australia.
The ITF Men's World Tennis Tour is a series of professional tennis tournaments held around the world that are organized by the International Tennis Federation. The tour represents the lowest rung of the men's professional tennis ladder. ITF tournaments are incorporated into the ATP rankings, enabling young professionals to progress on to the ATP Challenger Tour and ultimately the full ATP Tour. Nearly every professional player has spent some time on the ITF Men's World Tennis Tour.
The 2012 ATP World Tour is the global elite professional tennis circuit organized by the Association of Tennis Professionals (ATP) for the 2012 tennis season. The 2012 ATP World Tour calendar comprises the Grand Slam tournaments, the ATP World Tour Masters 1000, the ATP World Tour 500 series, the ATP World Tour 250 series, the ATP World Team Championship, the Davis Cup, the ATP World Tour Finals, and the tennis event at the London Summer Olympic Games. Also included in the 2012 calendar is the Hopman Cup, which is organized by the ITF and does not distribute ranking points.
The 2012 ITF Men's Circuit is the 2012 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2012 ITF Men's Circuit is the 2012 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry-level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2012 ITF Men's Circuit is the 2012 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
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 2013 ITF Men's Circuit is the 2013 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry-level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2013 ITF Men's Circuit is the 2013 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2013 ITF Men's Circuit is the 2013 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2015 WTA Tour was the elite professional tennis circuit organised by the Women's Tennis Association (WTA) for the 2015 tennis season. The 2015 WTA Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation, the WTA Premier tournaments, the WTA International tournaments, the Fed Cup, and the year-end championships. Also included in the 2015 calendar is the Hopman Cup, which is organized by the ITF and does not distribute ranking points.
The 2014 ITF Men's Circuit is the 2014 edition of the entry level tour for men's professional tennis, and is the third tier tennis tour below the Association of Tennis Professionals, World Tour and Challenger Tour. It is organised by the International Tennis Federation (ITF) who additionally organizes the ITF Women's Circuit which is an entry-level tour for women's professional tennis. Future tournaments are organized to offer either $10,000 or $15,000 in prize money and tournaments which offering hospitality to players competing in the main draw give additional ranking points which are valid under the ATP ranking system, and are to be organized by a national association or approved by the ITF Men's Circuit Committee.
The 2016 WTA Tour was the elite professional tennis circuit organised by the Women's Tennis Association (WTA) for the 2016 tennis season. The 2016 WTA Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation, the WTA Premier tournaments, the WTA International tournaments, the Fed Cup, the year-end championships. Also included in the 2016 calendar is the Summer Olympic Games and Hopman Cup, which were organized by the ITF and did not distribute ranking points.
The 2016 International Tennis Federation (ITF) Women's Circuit is a second-tier tour for women's professional tennis. It is organized by the International Tennis Federation and is a tier below the Women's Tennis Association (WTA) Tour. The ITF Women's Circuit includes tournaments with prize money ranging from $10,000 to $100,000.
The 2016 ITF Men's Circuit is the 2016 edition of the second-tier tour for men's professional tennis. It is organised by the International Tennis Federation and is a tier below the ATP Tour. The ITF Men's Circuit includes tournaments with prize money ranging from $10,000 up to $25,000.
The 2017 ITF Men's Circuit is the 2017 edition of the second-tier tour for men's professional tennis. It is organised by the International Tennis Federation and is a tier below the ATP Tour. The ITF Men's Circuit includes tournaments with prize money ranging from $15,000 up to $25,000.
The 2018 ITF Men's Circuit is the 2018 edition of the second-tier tour for men's professional tennis. It is organised by the International Tennis Federation and is a tier below the ATP Tour. The ITF Men's Circuit includes tournaments with prize money ranging from $15,000 up to $25,000.
The 2022 International Tennis Federation (ITF) Men's World Tennis Tour is an entry level tour for Men's professional tennis. It is organized by the International Tennis Federation and is a tier below the ATP Challenger Tour. The Men's ITF World Tennis Tour includes tournaments with prize money of either $US15,000 or $25,000. The results of ITF tournaments are incorporated into the ATP ranking, which enables professionals to progress to the ATP Challenger Tour and ATP Tour, and ultimately the Grand Slams. The Tour offers approximately 530 tournaments across 60 countries.
Riccardo Bellotti (7) [1] 
