Tennis has come a long way since and the ATP's been part of the storied history.
The Grand Slam tournaments and all other national championships were open to amateur competitors only prior to 1968. Two years later tournaments around the world formed a unified circuit, which became the Grand Prix. In 1972, during the first week of the US Open at Forest Hills, the leading professionals joined forces to create the Association of Tennis Professionals.
This direction marked another defining moment in the history of the ATP, when a handful of the game's leading players met in a secluded stairwell at the US Open to discuss the need for a players' association. Under the leadership of newly elected Executive Director Jack Kramer and President Cliff Drysdale, the ATP came to life with a goal of changing the game for the better.
One of the initial acts of the organisation was the establishment of a computer ranking system that provided fair analysis of a player's performance as well as an objective means to determine entries into tournaments. The ATP Rankings began on 23 August 1973 and has continued through today as the official ranking system in men's professional tennis.
From 1974 to 1989, the men's circuit was administered by the Men's Tennis Council, made up of representatives of the International Tennis Federation (ITF), the ATP and tournament directors from around the world.
Although the period during which the MTC guided the game was one of tremendous progress and improvement, players began to feel more and more that they should have a greater voice in their sport. Players had realised the time had come for them to take more control over the game.
At the 1988 US Open, ATP CEO Hamilton Jordan (pictured), surrounded by many of the top players in the game, held the now-famous The ATP released "Tennis at the Crossroads," outlining the problems and opportunities facing men's tennis. One of the options available to the ATP was the formation of a new circuit, the ATP Tour.
Support for the new Tour was quick in coming as over 85 of the Top 100 players signed a letter of support for a new system. Later in the fall of 1988, 24 players, including eight of the Top 10, signed contracts to play the ATP Tour in 1990. Also that fall, tournament directors representing many of the world's leading events voiced their support for the players and joined them in what was to become a partnership unique in professional sports, with an equal voice in how the circuit is run.
The 2018 season marked the 29th year the ATP had administered the worldwide circuit of men's professional tennis. Here is a look at some of the highlights through the years:
The ATP agrees to new partnerships with Maui Jim, Peugeot, Infosys and Le Sports, as well as securing an enhanced partnership with Emirates that sees the award-winning airline become the Tour’s Premier Partner through 2020. The ATP launches its own social media network, MyATP powered by Vixlet. The Barclays ATP World Tour Finals are confirmed to stay in London a further three years, through 2018. The Tour achieves an all-time attendance record with 4.5 million fans attending on-site.
The ATP announces the launch of the Next Gen ATP Finals, set to take place in Milan from November 2017 featuring players aged 21-and-under.
The inaugural Next Gen ATP Finals takes place in Milan, with Hyeon Chung coming out on top in the new and innovative 21-and-under event. The ATP World Tour achieves an all-time attendance record with more than 4.5 million fan attending on-site, including 253,642 at the Nitto ATP Finals.
The ATP announces the launch of the ATP Cup, a new team event set to take place in Australia from January 2020 in partnership with Tennis Australia. A new 'ATP Tour' brand identity and 'Love It All' marketing campaign is unveiled for 2019.