Thomas Enqvist was the defending champion but lost in the second round to Jaime Yzaga.
Paul Annacone and John Fitzgerald were the defending champions but they competed with different partners that year, Annacone with Christo van Rensburg and Fitzgerald with Anders Järryd.
Petr Korda was the defending champion but lost in the quarterfinals to Fabrice Santoro.
Petr Korda and Wally Masur were the defending champions but they competed with different partners that year, Korda with Jim Pugh and Masur with Mark Kratzmann.
Jakob Hlasek was the defending champion but lost in the first round to Martin Střelba.
The 1989 Stella Artois professional tennis tournament was part of the ATP World Tour and was held in Milan, Italy. Boris Becker and Eric Jelen were the defending champions but only Jelen competed in 1989 with Wally Masur. Jelen and Masur lost in the first round to Paolo Canè and Michael Mortensen.
Rick Leach and Jim Pugh won in the final 6–3, 6–4 against Paul Chamberlin and Paul Wekesa.
Grant Connell and Patrick Galbraith were the defending champions but did not compete that year.
Wayne Ferreira and Yevgeny Kafelnikov were the defending champions but lost in the first round to David Rikl and Daniel Vacek.
Luis Lobo and Javier Sánchez were the defending champions but lost in the quarterfinals to Trevor Kronemann and David Macpherson.
Yevgeny Kafelnikov and Andrei Olhovskiy were the defending champions but only Olhovskiy competed that year with Ken Flach.
Cyril Suk and Daniel Vacek were the defending champions but they competed with different partners that year, Suk with Petr Korda and Vacek with Yevgeny Kafelnikov.
Jacco Eltingh and Paul Haarhuis were the defending champions but lost in the final 3–6, 6–4, 6–3 against Sébastien Lareau and Alex O'Brien.
Grant Connell and Patrick Galbraith were the defending champions but they competed with different partners that year, Connell with Byron Black and Galbraith with Jonathan Stark.
Jakob Hlasek and John McEnroe were the defending champions but this time Hlasek played in pair with Frenchman Guy Forget and lost in the second round to Australians Mark Woodforde and Todd Woodbridge.
Yevgeny Kafelnikov and Daniel Vacek defeated Guy Forget and Jakob Hlasek in the final, 6–2, 6–3 to win the men's doubles tennis title at the 1996 French Open. As of 2023, Kafelnikov remains the most recent man to win both the singles and men's doubles events at the same edition of a major.
The 1996 US Open was a tennis tournament played on outdoor hard courts at the USTA National Tennis Center in New York City in New York in the United States. It was the 116th edition of the US Open and was held from August 26 through September 8, 1996.
The 1991 Grand Prix de Tennis de Toulouse was a men's tennis tournament played on indoor carpet courts in Toulouse, France that was part of the World Series of the 1991 ATP Tour. It was the tenth edition of the tournament and was held from 30 September – 6 October.
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Jakob Hlasek 
Paul Annacone 
John Fitzgerald 
Christo van Rensburg 
