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.
Michael Carl Bryan is an American former doubles world No. 1 tennis player. With his twin brother Bob, he was the world's top doubles player for more than nine years, first achieving the top ranking in September 2003. They became the second men's doubles team to complete the career Golden Slam by winning the 2012 London Olympics. Bryan holds the records for the most major men's doubles titles at 18, the most ATP Tour men's doubles titles (123), and the most weeks (506) ranked as the doubles world No. 1. He won all but five of his doubles titles with his brother; partnering Jack Sock, he won two majors and the year-end championship in 2018, as well as the 2018 ATP World Tour Fans' Favorite Doubles Team.
Jonas Lars Björkman is a Swedish former professional tennis player. He is a former world No. 1 in doubles, and also a former world No. 4 in singles. Björkman retired from professional tennis after competing at the 2008 Tennis Masters Cup doubles championships. As of 2019, he is ranked in the top 40 on the all-time ATP prize money list with over $14.5 million.
Ross Case is an Australian former tennis player. His career-high singles ranking was world No. 14.
The San Marino Davis Cup team represents San Marino in Davis Cup tennis competition and are governed by the San Marino Tennis Federation.
John Feaver is a former professional tennis player from the United Kingdom.
Michael Lammer is a retired Swiss professional tennis player. At the 2009 Allianz Suisse Open in Gstaad, he won the doubles tournament with compatriot Marco Chiudinelli. It was his only ATP tour title.
Toshihide Matsui is a professional Japanese tennis player. On 12 June 2006, he reached his highest ATP singles ranking of No. 261. He achieved his highest doubles ranking of No. 127 in October 2023. He is currently the oldest active singles player on the ATP world ranking.
The 2013 ATP World Tour was the global elite professional tennis circuit organized by the Association of Tennis Professionals (ATP) for the 2013 tennis season. The 2013 ATP World Tour calendar comprises the Grand Slam tournaments, the ATP World Tour Masters 1000, the ATP World Tour 500 series, the ATP World Tour 250 series, the Davis Cup and the ATP World Tour Finals. Also included in the 2013 calendar is the Hopman Cup, which was organized by the ITF and does not distribute ranking points.
Liz Camila Giangreco Campiz is a Paraguayan former professional tennis player.
Katarzyna Kawa is a Polish professional tennis player. Her career-high WTA rankings are 112 in singles, achieved November 2020, and world No. 64 in doubles, set on 10 October 2022. She has won four WTA Challenger doubles titles, and also seven singles and 19 doubles titles on tournaments of the ITF Women's Circuit.
Daniel Glancy is a former Irish professional tennis player. He was born and raised in County Mayo, Ireland.
Rainer Eitzinger is an Austrian former professional tennis player. He turned professional in 2003, and he achieved his career-high singles ATP ranking of 166 in July 2006. He retired in 2011. He played mostly in the ATP challenger and the ITF Futures circuits. He also represented Austria in a Davis Cup match in 2006 vs. Mexico, where he defeated Daniel Garza.
Colin O'Brien is a former Irish professional tennis player. He was born in Dublin, Ireland.
Jordan Thompson is an Australian professional tennis player, reaching a career-high ranking of world No. 32 achieved in February 2024 and in doubles of No. 59 achieved in April 2024. He has won one singles and three doubles ATP titles. He is currently the No. 2 Australian singles player.
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.
Mark Fynn is a professional Zimbabwean tennis player.
Jabor Mohammed Ali Mutawa is a Qatari tennis player.
Lior Mor is a former professional tennis player from Israel. He was ranked as high as 171 in the world in singles, and 164 in the world in doubles.
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.
San Marino 
