The Davis Cup is the premier international team event in men's tennis. It is run by the International Tennis Federation (ITF) and is contested annually between teams from over 150 competiting countries, making it the world's largest annual team sporting competition. It is described by the organisers as the "World Cup of Tennis", and the winners are referred to as the World Champions. The competition began in 1900 as a challenge between Great Britain and the United States. By 2023, 155 nations entered teams into the competition.
The International Tennis Federation (ITF) is the governing body of world tennis, wheelchair tennis, and beach tennis. It was founded in 1913 as the International Lawn Tennis Federation by twelve national tennis associations. As of 2016, there are 211 national and six regional associations that make up the ITF's membership.
Gilles Müller is a Luxembourgish former professional tennis player. He is a two-time major singles quarterfinalist, making him by far the most successful male tennis player in Luxembourgish history. Müller won two titles on the ATP Tour and achieved a career-high ATP singles ranking of world No. 21 on 31 July 2017. He was known for his powerful left-handed serve and net skills. Following his retirement, Müller was appointed as Luxembourg's Davis Cup team captain.
Mark Knowles is a Bahamian former professional tennis player and coach. He is a former world No. 1 in doubles. He won three of the four Grand Slam tournaments in men's doubles, partnering with Daniel Nestor, as well as Wimbledon in mixed doubles. At various times between 2002 and 2005 he was ranked World No. 1 in doubles. He is a five-time Olympian.
Daniel Evans is a British professional tennis player from England. He has been ranked as high as world No. 21 in singles by the ATP, which he achieved on 7 August 2023. He is the current British No. 3 in singles. He reached a career-high ranking of world No. 52 in doubles on 26 April 2021. In 2015, he formed part of the winning British Davis Cup team.
Ken Skupski Jr. is a British former professional tennis player who specialised in doubles.
Víctor Estrella Burgos is a Dominican former professional tennis player. In 2014, Estrella became the first Dominican to reach the top 100 in the ATP rankings. He also became the first Dominican player to reach the semifinals in an ATP 250 tournament in Bogotá. In 2015, he also became the first tennis player from his country to participate in all four Grand Slams, playing in the Australian Open. In February 2015, he won his first career ATP title at the Ecuador Open, becoming the oldest first-time ATP tour winner in the Open Era. He successfully defended his title with a 100% winning record at the event in 2016 and 2017, but lost in the second round in 2018.
Martín Cuevas Urroz is an Uruguayan professional tennis player.
Vishnu Vardhan, also known as J. Vishnuvardhan, is an Indian professional tennis player. He won bronze medal in men's doubles at 2010 Asian games in Guangzhou, China. He paired-up with and Sania Mirza for mixed doubles and won silver medal at the same event. He was featured as ITF player of April 2011. He won the national singles title for the fourth time by winning the Men's final of Fenesta Open tennis Championship on 8 October 2016
Sam Barry is an Irish professional tennis player. He was born and raised in Limerick, Ireland.
Dimitar Kuzmanov is a Bulgarian professional tennis player. He competes on the ATP Challenger Tour. His highest singles ranking is No. 159 achieved on 29 August 2022, whilst his best doubles ranking is No. 438 achieved on 1 April 2019.
Frederico Ferreira "Kiko" Silva is a Portuguese tennis player who currently competes mainly on the ITF Men's Circuit and ATP Challenger Tour. On May 24, 2021, Silva reached a career singles high ranking of No. 168. He also reached a career-high of No. 242 in doubles in August 2016. In 2012, Silva became the first Portuguese player to win a Grand Slam title with the win at the US Open junior doubles tournament, teaming with Brit Kyle Edmund. In 2013, he would repeat the feat at the French Open junior doubles with Edmund. He reached a junior high world no. 6 in January 2012.
Nikola Milojević is a Serbian professional tennis player. Milojević has a career high ATP singles ranking of No. 125, which he achieved on 21 February 2022. He also achieved a career high ATP doubles ranking of No. 252 on 18 February 2019. He reached his highest ranking of no. 1 in ITF Junior rankings on 7 January 2013.
Quentin Halys is a French professional tennis player. Halys has a career-high ATP singles ranking of world No. 61 achieved on 16 January 2023 and a doubles ranking of No. 129 achieved on 3 October 2022. He has won seven singles titles on the ATP Challenger Tour and seven in doubles.
Luke Bambridge is a British former tennis player. A doubles specialist, he reached a career-high Association of Tennis Professionals (ATP) world No. 41 doubles ranking in May 2019.
Alberto "AJ" Lim Jr. is a Filipino tennis player.
Nick Hardt is a Dominican professional tennis player. He has a career high ATP singles ranking of world No. 193 achieved on 27 May 2024 and a doubles ranking of No. 282 achieved on 24 August 2023.
Emil Ruusuvuori is a Finnish professional tennis player. He reached a career high ATP singles ranking of World No. 37 on 3 April 2023. He is currently the No. 1 Finnish singles tennis player. He has a career-high doubles ranking of World No. 179 achieved on 2 May 2022.
Jesús Francisco Félix is a Dominican tennis player.
Adolfo Daniel Vallejo is a Paraguayan tennis player. Vallejo has a career-high ATP singles ranking of world No. 299 achieved on 6 May 2024. He is currently the No. 1 Paraguayan tennis player.
Dominican Republic 
