The ATP Masters events, known as ATP Masters 1000 tournaments since 2009, are an annual series of nine tennis tournaments featuring the top-ranked players on the ATP Tour since its inception in 1990. The Masters tournaments, sitting below the Grand Slam tournaments and the year-end championships, make up the most coveted trophies on the annual ATP Tour calendar. In addition to the quadrennial Summer Olympics, they are collectively known as the 'Big Titles'.
Radu Albot is a Moldovan professional tennis player. He is the first player from Moldova to win ATP World Tour singles and doubles titles. He achieved a career high ranking of No. 39 on 5 August 2019. He is also the first Moldovan to break into the top 100 in August 2015 and four years later in the top 40.
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.
Reilly Opelka is an American professional tennis player. At 6 feet 11 inches (2.11 m), he is tied for the tallest-ever ATP-ranked player, and can produce serves that measure over 140 miles per hour (225 km/h). He has been ranked as high as world No. 17 in singles by the ATP, which he achieved on February 28, 2022, and in doubles as world No. 89 on August 2, 2021. He has won four ATP singles titles and one doubles title. He won the junior Wimbledon championship in 2015.
Daniil Sergeyevich Medvedev is a Russian professional tennis player. He has been ranked as high as world No. 1 in men's singles by the Association of Tennis Professionals (ATP). He has won 20 ATP Tour singles titles, including the 2021 US Open and 2020 ATP Finals.
Lorenzo Musetti is an Italian professional tennis player. He has a career-high singles ATP ranking of World No. 15 achieved on 26 June 2023 and a doubles ranking of No. 142 achieved on 1 April 2024. He is currently the No. 2 Italian. Musetti has won two ATP Tour singles titles. In 2024, he achieved his best career major performance by reaching the semifinals at Wimbledon, and won a bronze medal at the 2024 Paris Olympics. With Italy's national team he has won the Davis Cup in 2023 and 2024.
Holger Vitus Nødskov Rune is a Danish professional tennis player. He reached a career-high singles ranking of World No. 4 by the Association of Tennis Professionals (ATP), making him the highest-ranked male Danish player in the history of the ATP rankings. Rune has won four ATP Tour singles titles, including a Masters 1000 title at the 2022 Paris Masters, and has reached three major quarterfinals.
Alejandro Tabilo Álvarez is a Canadian-Chilean professional tennis player. He has been ranked by the ATP as high as world No. 19 in singles, achieved on 1 July 2024 and a doubles ranking of No. 108, attained on 6 January 2025. He is currently the No. 1 player from Chile.
Novak Djokovic began the 2020 tennis season on 3 January 2020, in the first round at the inaugural 2020 ATP Cup venues in Brisbane.
Tomáš Macháč is a Czech professional tennis player. He achieved his career-high ATP singles ranking of world No. 25 on 14 October 2024 and doubles ranking of No. 46 on 30 September 2024.
Luca Nardi is an Italian professional tennis player. He has a career-high ATP singles ranking of world No. 70 achieved on 20 May 2024. He also has a career-high ATP doubles ranking of world No. 299, attained on 10 April 2023.
This is a list of the combined career statistics of the Big Four, the four players who have dominated men's tennis in singles for the majority of the first quarter of the 21st century. The Big Four consists of Roger Federer, Rafael Nadal, Novak Djokovic, and Andy Murray.
Hamad Medjedovic is a Serbian professional tennis player. On 27 January 2025, Medjedovic reached his career-high ATP singles ranking of world No. 94.
Nishesh Basavareddy is an American professional tennis player. He has a career-high ATP singles ranking of world No. 107 achieved on 13 January 2025, and a doubles ranking of No. 676 achieved in November 2024.
The 2023 Novak Djokovic tennis season is considered one of the greatest tennis seasons of all time by an individual tennis player. It officially began on 1 January 2023, with the start of the Adelaide International, and ended 25 November 2023 after Serbia's defeat by Italy in the semifinals of the Davis Cup Finals.
The 2024 Novak Djokovic tennis season, officially began on 31 December 2023, with the start of the 2024 United Cup, and ended 13 October 2024 after Djokovic was defeated by Sinner in the finals of the Shanghai Masters.
Roger Federer 
Novak Djokovic 
Rafael Nadal 
Pete Sampras 
Andy Murray 
Thomas Muster 
Lleyton Hewitt 
Goran Ivanišević 
Jannik Sinner 
Nikolay Davydenko 
Thomas Enqvist 
Gustavo Kuerten 
Alexander Zverev 
Richard Gasquet 
Kei Nishikori 
Casper Ruud 
Stefanos Tsitsipas 
Milos Raonic
Grigor Dimitrov
Juan Martín del Potro 
Tomáš Berdych 
