Roger Federer is a Swiss former professional tennis player. He was ranked world No. 1 in singles by the Association of Tennis Professionals (ATP) for 310 weeks, including a record 237 consecutive weeks, and finished as the year-end No. 1 five times. He won 103 singles titles on the ATP Tour, the second most of all time, including 20 major men's singles titles, a record eight men's singles Wimbledon titles, an Open Era joint-record five men's singles US Open titles, and a joint-record six year-end championships. In his home country, he is regarded as "the greatest and most successful" Swiss sportsperson in history.
Stefan Bengt Edberg is a Swedish former professional tennis player. A major practitioner of the serve-and-volley style of tennis, he won six Grand Slam singles titles and three Grand Slam men's doubles titles between 1985 and 1996. He is one of only two men in the Open Era to have been ranked world No. 1 in both singles and doubles. He also won the Masters Grand Prix and was a part of the Swedish Davis Cup-winning team four times. In addition, he won four Masters Series titles, four Championship Series titles and the unofficial 1984 Olympic tournament, was ranked in the singles top 10 for ten successive years, and ranked nine years in the top 5. After retirement, Edberg began coaching Roger Federer in January 2014, with this partnership ending in December 2015.
MaliVai "Mal" Washington is an American former professional tennis player. He reached the men's singles final at Wimbledon in 1996, won four ATP titles and achieved a career-high singles ranking of world No. 11 in October 1992.
Stefano Galvani is a professional male tennis player from San Marino. He is a professional from 1999 and was coached by Patricio Remondegui.
Claudio Mezzadri is a retired professional tennis player from Switzerland. Mezzadri turned professional in 1983, and won his only ATP singles title four years later in Geneva. He also won four doubles titles in his career. His highest ranking was world No. 26 in singles in November 1987 and No. 23 in doubles in February 1988.
The 1987 Nabisco Grand Prix was the only tennis circuit held that year. It incorporated the four grand slam tournaments, three World Championship Tennis tournaments and the Grand Prix tournaments.
The 1987 Geneva Open was a men's tennis tournament played on clay courts that was part of the 1987 Nabisco Grand Prix. It was played at Geneva in Switzerland from 14 September through 20 September 1987. Unseeded Claudio Mezzadri won the singles title.
Michael Walker is a former professional tennis player from Wales who competed for Great Britain and Hong Kong.
Nicolás Jarry Fillol is a Chilean professional tennis player. He achieved his highest ATP singles ranking of world No. 26 in July 2023 and is the current Chilean No. 1. His highest doubles ranking of world No. 40 was achieved in March 2019. He has won three ATP titles, in singles at Båstad 2019, Santiago 2023 and Geneva 2023. He also has won two titles in doubles on the ATP Tour.
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 six ATP Tour singles titles, including a Masters 1000 title at the 2021 Miami Open. With the win, he became 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.
Casper Ruud is a Norwegian professional tennis player. Ruud has a career-high singles ranking of world No. 2, achieved on 12 September 2022, making him the highest-ranked Norwegian in history. He has won ten ATP Tour singles titles, nine of which were on clay courts, and finished runner-up at three Grand Slams and at the 2022 ATP Finals.
Denis Langaskens is a former professional tennis player from Belgium.
Stefanos Tsitsipas is a Greek professional tennis player. He has been ranked as high as world No. 3 by the Association of Tennis Professionals (ATP), which he first achieved on 9 August 2021, making him the highest-ranked Greek player in history alongside Maria Sakkari. Tsitsipas was the champion at the 2019 ATP Finals, becoming the youngest winner of the year-end championships in eighteen years. He has won nine ATP singles titles and has contested two major finals at the 2021 French Open and 2023 Australian Open, finishing runner-up to Novak Djokovic both times. He has a career-high doubles ranking of No. 64, achieved on 29 August 2022.
Alexander Ritschard is a Swiss–American tennis player. He has a career high ATP singles ranking of World No. 160 achieved on 19 June 2023. He also has a career high ATP doubles ranking of World No. 388 achieved on 4 April 2022.
Matteo Berrettini is an Italian professional tennis player. He has been ranked as high as world No. 6 in singles by the Association of Tennis Professionals (ATP), which he achieved in January 2022, and world No. 105 in doubles achieved on July 2019. Berrettini has won seven ATP Tour singles titles and two doubles titles, and produced his best major performance by reaching the singles final of the 2021 Wimbledon Championships. He has also reached the quarterfinals or better at all four majors, being the first man born in the 1990s and the first Italian man to achieve the feat.
The 2019 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2019 tennis season. The 2019 ATP Tour calendar comprised the Grand Slam tournaments, the ATP Tour Masters 1000, the ATP Finals, the ATP Tour 500 series, the ATP Tour 250 series and Davis Cup. Also included in the 2019 calendar were the Hopman Cup, the Laver Cup and the Next Gen ATP Finals which do not distribute ranking points. For the Masters series events the ATP introduced a shot clock. Players had a minute to come on court, 5 minutes to warmup, and then a minute to commence play, as well as 25 seconds between points.
Denys Maasdorp is a former professional tennis player from South Africa.
The 2021 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2021 tennis season. The 2021 ATP Tour calendar comprised the Grand Slam tournaments, the ATP Finals, the ATP Tour Masters 1000, the ATP Cup, the ATP Tour 500 series and the ATP Tour 250 series. Also included in the 2021 calendar were the Davis Cup, the Summer Olympics in Tokyo, Next Gen ATP Finals, Laver Cup, none of which distributed ranking points.
Dominic Stephan Stricker is a Swiss professional tennis player. He has a career high ATP singles ranking of No. 111 achieved on 7 November 2022. He also has a career high ATP doubles ranking of No. 161 achieved on 27 June 2022. On the junior tour, he had a career high junior ranking of No. 8, achieved on 3 February 2020.
The 2022 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2022 tennis season. The 2022 ATP Tour calendar comprised the Grand Slam tournaments, the ATP Finals, the ATP Tour Masters 1000, the ATP Cup, the ATP 500 series and the ATP 250 series. Also included in the 2022 calendar were the Davis Cup, Wimbledon, the Next Gen ATP Finals, and Laver Cup, none of which distributed ranking points. As part of international sports' reaction to the Russian invasion of Ukraine, the ATP, the WTA, the ITF, and the four Grand Slam tournaments jointly announced on 1 March that players from Belarus and Russia would not be allowed to play in tournaments under the names or flags of their countries, but would remain eligible to play events until further notice. On 20 May 2022, the ATP, ITF, and WTA announced that ranking points would not be awarded for Wimbledon, due to the All England Club's decision to prohibit players from Belarus or Russia from participating in the tournament.
Switzerland 
