The 2004 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2004 tennis season. The ATP Tour is the elite tour for professional tennis organised by the ATP. The ATP Tour includes the four Grand Slam tournaments, the Tennis Masters Cup, the ATP Masters Series, the International Series Gold and the International Series tournaments.
The 2004 Madrid Masters was a tennis tournament played on indoor hard courts. It was the 3rd edition of the Madrid Masters, and was part of the ATP Masters Series of the 2004 ATP Tour. It took place at the Madrid Arena in Madrid, Spain, from 18 October through 25 October 2004. Third-seeded Marat Safin won the singles title.
Daniel Dutra da Silva is a professional tennis player from Brazil.
Richard Vogel is a former professional tennis player from the Czech Republic who competed for Czechoslovakia.
Lucas Miedler is an Austrian tennis player. He has a career-high singles ATP ranking of World No. 201 achieved on 15 October 2018 and a doubles ranking of 96 achieved 6 June 2022.
The 2016 ATP World Tour was the global elite professional tennis circuit organized by the Association of Tennis Professionals (ATP) for the 2016 tennis season. The 2016 ATP World Tour calendar comprised the Grand Slam tournaments, the ATP World Tour Masters 1000s, 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 2016 calendar were the tennis events at the 2016 Summer Olympics and Hopman Cup, neither of which distributed ranking points.
Juan Pablo Varillas Patiño-Samudio is a Peruvian tennis player.
Alexander Erler is an Austrian tennis player. He has a career high ATP singles ranking of world No. 322, achieved on 4 October 2021. Additionally, he has a career high doubles ranking of world No. 126, achieved on 13 December 2021.
Yannick Hanfmann is a German professional tennis player. He has a career-high ATP singles ranking of world No. 92, first achieved in May 2021. He is known for his powerful serves and groundstrokes.
Gianluca Mager is an Italian tennis player. He has a career-high ATP singles ranking of No. 66 achieved on 13 September 2021. He also has a career high ATP doubles ranking of No. 310 achieved on 10 June 2019.
Gerald Mandl is a former professional tennis player from Austria.
Sebastian Ofner is an Austrian professional tennis player. He has a career high ATP singles ranking of World No. 126 achieved on 6 May 2019. He was a semifinalist at the 2017 Generali Open Kitzbühel in his home country.
Maja Živec-Škulj is a former professional tennis player from Germany.
The 2004 Generali Open was a men's tennis tournament played on outdoor clay courts at the Tennis Stadium Kitzbühel in Kitzbühel, Austria and was part of the International Series Gold of the 2004 ATP Tour. It was the 49th edition of the tournament and ran from 19 July until 25 July 2004. Third-seeded Nicolás Massú won the singles title.
Vitaliy Sachko is a Ukrainian tennis player. He has a career-high singles ranking of World No. 220 achieved on 7 March 2022 and also reached as high as No. 149 in doubles on 2 May 2022. He is currently the No. 1 Ukrainian tennis player.
Reinhard Wawra is an Austrian former professional tennis player.
Johannes Ager is an Austrian former professional tennis player.
Martin Schäffl is an Austrian former professional tennis player.
The 1991 Philips Austrian Open, also known as the Austrian Open Kitzbühel, was a men's tennis tournament held on outdoor clay courts at the Kitzbüheler Tennisclub in Kitzbühel, Austria that was part of the ATP World Series of the 1991 ATP Tour. It was the 21st edition of the tournament and was held from 29 July until 4 August 1991. Third-seeded Karel Nováček won the singles title.
Hernán Casanova is an Argentine tennis player.
Germany 
