Raven Klaasen is a South African professional tennis player who specialises in doubles.
Radu Albot is a Moldovan professional tennis player. He is the first player from Moldova to win ATP World Tour singles and doubles titles.
Peđa Krstin is a Serbian professional tennis player. Krstin has a career high ATP singles ranking of No. 159, which he achieved on 9 May 2016. He also achieved a career high ATP doubles ranking of No. 554 on 17 October 2015. He has won one Challenger and 14 Futures singles titles in his career.
Ricardo Rodríguez-Pace is a Venezuelan professional tennis player. He achieved a career high ATP ranking of World No. 282 on June 9, 2014. Born in Caracas, Venezuela, Rodríguez started playing tennis at the age of seven and achieved more success on singles. He entered the pro circuit in 2008 and has won ten Futures tournaments in singles and nine in doubles. Rodríguez is also a member of the Venezuela Davis Cup team where he holds the record of most singles victories in the history of Venezuela (22-9) in 17 appearances.
Gonzalo Escobar is an Ecuadorian tennis player. His career-high doubles ranking is World No. 38, achieved on 15 November 2021. He has won three ATP doubles titles with Uruguayan partner Ariel Behar and eight Challengers. Escobar has a career high ATP singles ranking of No. 281 achieved on 15 June 2015.
Jan Šátral is an inactive Czech tennis player. Šátral has a career high ATP singles ranking of World No. 136 achieved on 3 October 2016. He also has a career high ATP doubles ranking of World No. 160 achieved on 21 September 2015. He has won 2 Challengers and 9 ITF singles titles and 2 Challengers and 21 ITF doubles titles.
Dean Kevin O'Brien is a South African tennis player. He played college tennis for the Georgia Tech Yellow Jackets.
Danilo Petrović is an inactive Serbian tennis player.
Joris De Loore is a Belgian tennis player. De Loore has a career high ATP singles ranking of 174 achieved on 17 October 2016. He also has a career high ATP doubles ranking of 263, achieved on 24 December 2018. De Loore has won one Challenger, eleven ITF singles titles and one Challenger, fourteen ITF doubles titles. He competes mainly on the ATP Challenger Tour.
Altuğ Çelikbilek is a Turkish professional tennis player.
Zsombor Piros is a Hungarian tennis player.
Dmitry Yevgenyevich Popko is a Russian-born Kazakhstani tennis player.
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.
Michail Pervolarakis is a Cypriot-born Greek tennis player.
Mehdi Ziadi is a former Moroccan tennis player.
Shaheed Alam is a Singaporean tennis player.
Yuta Shimizu is a Japanese tennis player.
Conner Huertas del Pino is a Peruvian tennis player.
Vladyslav Orlov is a Ukrainian tennis player.
Ray Ho is a Taiwanese tennis player.
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