Andrey Andreyevich Rublev is a Russian professional tennis player. He has been ranked as high as world No. 5 in singles by the Association of Tennis Professionals (ATP), which he first achieved in September 2021. Rublev has won 15 ATP Tour singles titles, including a Masters 1000 title at the 2023 Monte-Carlo Masters. He has a career-high doubles ranking of No. 44, achieved on 6 November 2023. He has won four doubles titles, including an Olympic gold medal in the mixed doubles at the 2020 Summer Olympics with Anastasia Pavlyuchenkova and a Masters 1000 title at the 2023 Madrid Open with Karen Khachanov.
Karen Abgarovich Khachanov is a Russian professional tennis player. Khachanov has won five ATP Tour singles titles, including a Masters 1000 title at the 2018 Paris Masters, has claimed an Olympic silver medal at the 2020 Tokyo Olympics, and has reached two Major semifinals at the 2022 US Open and 2023 Australian Open. He has also won one doubles Masters 1000 title at the 2023 Madrid Open partnering Andrey Rublev. He achieved his career-high singles ranking of world No. 8 on 15 July 2019. He also has a career high ranking of No. 57 in doubles achieved on 6 November 2023. His current ranking, as of December 19, 2023, is 15th in the world by the Association of Tennis Professionals (ATP).
Yoshihito Nishioka is a Japanese professional tennis player. He has won two ATP Tour singles titles and achieved a career-high ATP singles ranking of world No. 24 on 19 June 2023. He is currently the No. 1 Japanese player.
Roman Rishatovich Safiullin is a Russian professional tennis player. Safiullin has a career high ATP singles ranking of world No. 36 achieved on 8 January 2024, and in doubles of world No. 239 achieved on 7 February 2022.
Hubert Hurkacz is a Polish professional tennis player. He has been ranked as high as world No. 9 in singles by the Association of Tennis Professionals (ATP), which he first achieved in November 2021, making him the highest-ranked Polish man in singles history. He has won seven ATP Tour singles titles, including two Masters 1000 titles at the 2021 Miami Open and the 2023 Shanghai Masters, becoming the first Pole to win an ATP Masters 1000 title. Hurkacz also has a career-high ranking of world No. 30 in doubles, which he attained in June 2022.
Tommy Paul is an American professional tennis player. Paul has a career-high ATP singles ranking of world No. 12, achieved on 2 October 2023, and doubles ranking of No. 97, achieved on 12 September 2022. He won his maiden ATP title at the 2021 Stockholm Open, and reached a major semifinal at the 2023 Australian Open. As of January 8th, 2024, he was ranked 14th in the world by the Association of Tennis Professionals (ATP).
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, holding the ranking for a total of 16 weeks. As of December 19, 2023, ranked world No. 3 in singles by the Association of Tennis Professionals (ATP), Medvedev has won 20 ATP Tour singles titles, including the 2021 US Open and 2020 ATP Finals. In the former, Medvedev defeated then-world No. 1 Novak Djokovic in the final to deny him the Grand Slam. In the latter, he became the first and only player to defeat the top three ranked players in the world en route to the year-end championship title. He has also won six Masters titles, and contested five major finals. His six Masters titles all came in different venues, making him only the sixth player to win Masters titles at six different venues. Medvedev made his ATP Tour main draw debut at the singles event of the 2015 Kremlin Cup. In 2017, he participated in a major for the first time at Wimbledon, where he defeated world No. 3 Stan Wawrinka. In 2018, Medvedev won his first ATP Tour singles titles at Sydney and Winston-Salem, and his first ATP 500 title in Tokyo. He achieved a breakthrough in 2019, making his top 10 debut after Wimbledon and reaching six consecutive tournament finals, including at the US Open. In February 2022, Medvedev became the first man outside of the Big Three to hold the world No. 1 ranking since Andy Murray, the third Russian man following Yevgeny Kafelnikov in 1999 and Marat Safin in 2000, and the 27th man overall.
Alex de Minaur is an Australian professional tennis player. He achieved a career-high ATP singles ranking of No. 10 on 8 January 2024 and a doubles ranking of No. 58 on 12 October 2020.
Botic van de Zandschulp is a Dutch professional tennis player. Van de Zandschulp has a career high ranking of world No. 22 in singles by the ATP, achieved on 29 August 2022. He is the current Dutch No. 2 men's singles player. He also has a career high doubles ranking of world No. 60, achieved on 22 May 2023. Van de Zandschulp has won one ATP Challenger singles title in Hamburg and one ATP Challenger doubles title in Alphen.
Sebastian Korda is an American professional tennis player. Korda's career-high ATP singles ranking of world No. 23 was achieved on October 16, 2023. He has won one ATP singles tournament, the 2021 Emilia-Romagna Open. He also won the junior title at the 2018 Australian Open, 20 years after his father Petr Korda won the Australian Open title.
Jannik Sinner is an Italian professional tennis player. He has been ranked as high as world No. 4 by the ATP, achieved on 2 October 2023, making him the highest ranked Italian male player in history. He also has a career-high ranking of world No. 124 in doubles, achieved on 27 September 2021. Sinner has won ten ATP Tour titles in singles, including a Masters 1000 title at the 2023 Canadian Open, and one in doubles.
Carlos Alcaraz Garfia is a Spanish professional tennis player. He has been ranked as high as world No. 1 in men's singles by the Association of Tennis Professionals (ATP). As of December 19, 2023, he was ranked 2nd in the world by the Association of Tennis Professionals (ATP). Alcaraz has won twelve ATP Tour-level singles titles, including two major titles and four Masters 1000 titles. Following his win at the 2022 US Open, Alcaraz became the youngest man and the first teenager in the Open Era to top the singles rankings, at 19 years, 4 months, and 6 days old.
The 2021 Novak Djokovic tennis season is considered one of Djokovic's best. It saw him become the second man in tennis history to achieve the Surface Slam following Rafael Nadal in 2010, and repeat his feat from 2015 of reaching all four major finals in a season. He won five tournaments, three of them majors: the Australian Open, the French Open, and the Wimbledon Championships. Djokovic reached the final of the US Open in an attempt to achieve the Grand Slam, but finished runner-up to Daniil Medvedev. He also won the Paris Masters and Belgrade Open, and reached his first final in a doubles tournament since 2010 at the Mallorca Open.
The 2022 Rafael Nadal tennis season officially began on 3 January 2022, with the start of the ATP 250 tournament in Melbourne. It includes Nadal's best start to an ATP Tour season, when he won his first 20 matches in a row. It was also his career-first season winning the first two majors of the year, hence completing the Australian-French title double. As such, Nadal broke his tie with Roger Federer and Novak Djokovic, and became the first man in history to win a total 21, and 22 Grand Slam singles titles.
The 2022 Novak Djokovic tennis season officially began on 21 February 2022, with the start of the Dubai Tennis Championships. During this season, Djokovic:
Carlos Alcaraz defeated Casper Ruud in the final, 6–4, 2–6, 7–6(7–1), 6–3 to win the men's singles tennis title at the 2022 US Open. It was his first major title. He claimed the world No. 1 singles ranking with the win; Ruud, Rafael Nadal, Daniil Medvedev, and Stefanos Tsitsipas were also in contention for the top position. Alcaraz saved a match point en route to the title, in the quarterfinals against Jannik Sinner. Alcaraz became the youngest major champion since Nadal at the 2005 French Open, the youngest US Open champion since Pete Sampras in 1990, the first man born in the 2000s to win a major singles title, and the youngest man to be ranked world No. 1, surpassing Lleyton Hewitt's record. Alcaraz also became the third player to reach a major final having won three consecutive five-set matches, after Stefan Edberg at the 1992 US Open and Andre Agassi at the 2005 US Open. At 23 hours and 39 minutes of play duration across his seven matches, Alcaraz spent the longest time on court in major history. Ruud became the first Norwegian to reach the final.
Novak Djokovic defeated Stefanos Tsitsipas in the final, 6–0, 7–6(7–5) to win the men's singles tennis title at the 2022 Italian Open. It was his sixth Italian Open title and record-extending 38th Masters 1000 title overall. Djokovic did not lose a set during the tournament, and won his 1000th ATP Tour-level career match against Casper Ruud in the semifinals.
The 2023 Novak Djokovic tennis season 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 2023 Carlos Alcaraz tennis season officially began on 16 January 2023, with the start of the Australian Open in Melbourne. Alcaraz returned to action at the Argentina Open following injury suffered prior to the Australian Open.
Defending champion Novak Djokovic defeated Jannik Sinner in the final, 6–3, 6–3 to win the singles tennis title at the 2023 ATP Finals. It was his record-breaking seventh ATP Finals title, surpassing Roger Federer's achievement. Djokovic also surpassed his own record as the oldest singles champion in the tournament's history, at 36 years old, and extended his record of the longest timespan between first and last Tour Finals titles won, at 15 years. Djokovic claimed the year-end No. 1 ranking for a record-extending eighth time after winning his first round-robin match; Carlos Alcaraz was also in contention for the year-end top spot.
Russia (not allowed to play under the Russian flag)
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