| Doubles | |
|---|---|
| 1994 Grand Prix de Tennis de Lyon | |
| Champions |  Jakob Hlasek  Yevgeny Kafelnikov |
| Runners-up |  Martin Damm  Patrick Rafter |
| Score | 6–7, 7–6, 7–6 |
| Draw | 16 |
| Seeds | 4 |
Gary Muller and Danie Visser were the defending champions, but lost in the quarterfinals this year.
Jakob Hlasek and Yevgeny Kafelnikov won the title, defeating Martin Damm and Patrick Rafter 6–7, 7–6, 7–6 in the final.
Tom Nijssen / Cyril Suk (semifinals) Menno Oosting / Daniel Vacek (first round)
Olivier Delaître / 
Diego Nargiso (semifinals)
Gary Muller / Danie Visser (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | T Nijssen C Suk | 7 | 6 | 6 | |||||||||||||||||||||||
 B Shelton F Wibier | 6 | 7 | 1 | 1 | T Nijssen C Suk | 6 | 2 | 7 | |||||||||||||||||||
| B Pearce D Randall | 2 | 7 | 3 | WC | A Boetsch M Rosset | 3 | 6 | 6 | |||||||||||||||||||
| WC | A Boetsch M Rosset | 6 | 6 | 6 | 1 | T Nijssen C Suk | 3 | 3 | |||||||||||||||||||
| 4 | G Muller D Visser | 7 | 6 | M Damm P Rafter | 6 | 6 | |||||||||||||||||||||
| Q | G Bastié C Caratti | 6 | 3 | 4 | G Muller D Visser | 4 | 6 | ||||||||||||||||||||
| M Damm P Rafter | 6 | 6 | M Damm P Rafter | 6 | 7 | ||||||||||||||||||||||
| WC | J Courier T Nelson | 2 | 4 | M Damm P Rafter | 7 | 6 | 6 | ||||||||||||||||||||
| L Bale J-L de Jager | 6 | 7 | J Hlasek Y Kafelnikov | 6 | 7 | 7 | |||||||||||||||||||||
| WC | C Pioline F Santoro | 3 | 5 | L Bale J-L de Jager | 5 | 3 | |||||||||||||||||||||
| W Arthurs J Ireland | 7 | 5 | 3 | 3 | O Delaître D Nargiso | 7 | 6 | ||||||||||||||||||||
| 3 | O Delaître D Nargiso | 6 | 7 | 6 | 3 | O Delaître D Nargiso | 7 | 6 | 3 | ||||||||||||||||||
 T Carbonell J Sánchez | 6 | 5 | 3 | J Hlasek Y Kafelnikov | 6 | 7 | 6 | ||||||||||||||||||||
| R Gilbert S Simian | 3 | 7 | 6 | R Gilbert S Simian | 5 | 3 | |||||||||||||||||||||
| J Hlasek Y Kafelnikov | 7 | 6 | J Hlasek Y Kafelnikov | 7 | 6 | ||||||||||||||||||||||
| 2 | M Oosting D Vacek | 6 | 4 | ||||||||||||||||||||||||
The 1990 Cincinnati Open, was a tennis tournament played on outdoor hard courts. It was the 91st edition of the tournament and was part of the 1990 ATP Tour. It took place in Cincinnati, Ohio, United States from August 13 through August 20, 1990. Ken Flach and Robert Seguso were the defending champions, but lost in the second round to Sven Salumaa and Byron Talbot. Darren Cahill and Mark Kratzmann won in the final, 7–6, 6–2, against Neil Broad and Gary Muller.
Darren Cahill and Mark Kratzmann were the defending champions and lost in the second round to Stefan Edberg and Pete Sampras.
John Fitzgerald and Anders Järryd were the defending champions but lost in the semifinals to Neil Broad and Gary Muller.
Ken Flach and Kathy Jordan were the defending champions but lost in the quarterfinals to Andy Kohlberg and Patty Fendick.
Rick Leach and Jim Pugh were the defending champions but lost in the quarterfinals to Grant Connell and Glenn Michibata.
Kevin Curren and David Pate were the defending champions but lost in the second round to Amos Mansdorf and Mikael Pernfors.
Paul Annacone and Christo van Rensburg were the defending champions. Annacone competed alongside Kelly Evernden but lost in the semifinals, while van Rensburg played with Kevin Curren and lost in the quarterfinals.
Darren Cahill and Mark Kratzmann won the title, defeating Udo Riglewski and Michael Stich 7–5, 6–2, in the final.
Paul Annacone and Christo van Rensburg were the defending champions, but lost in the semifinals to Swedes and top seeds Stefan Edberg and Anders Järryd.
Pieter Aldrich and Danie Visser were the defending champions, but lost in the first round to Paul Haarhuis and Mark Koevermans.
Scott Davis and David Pate won the title, defeating Patrick McEnroe and David Wheaton 6–1, 4–6, 6–4, 5–7, 9–7, in the final. This was Pate's first Grand Slam title and final, despite gaining the World No. 1 ranking two weeks earlier.
John Fitzgerald and Anders Järryd lost in the third round to McEnroe and Wheaton. It was their only Grand Slam loss of the year, as they won the other three majors in 1991.
Jakob Hlasek and Marc Rosset were the defending champions, but Rosset did not participate this year. Hlasek partnered Michiel Schapers, losing in the first round.
Eric Jelen and Michael Mortensen were the defending champions, but Jelen did not participate this year. Mortensen partnered Gustavo Luza, losing in the first round.
Boris Becker and Guy Forget were the defending champions, but Becker did not participate this year. Forget partnered Henri Leconte.
Richard Krajicek and Jan Siemerink were the defending champions, but Krajicek did not participate this year. Siemerink partnered Daniel Vacek, losing in the semifinals.
The men's doubles tournament at the 1989 Australian Open was held from 16 through 29 January 1989 on the outdoor hard courts at the Flinders Park in Melbourne, Australia. Rick Leach and Jim Pugh won the title, defeating Darren Cahill and Mark Kratzmann in the final.
Kelly Jones and Robert Van't Hof were the defending champions, but Jones did not compete this year. Van't Hof teamed up with Laurie Warder and lost in the quarterfinals to Gary Muller and Danie Visser.
Wally Masur and Jason Stoltenberg were the defending champions, but competed this year with different partners. Masur teamed up with Mark Kratzmann and lost in the semifinals to Jim Grabb and Richey Reneberg, while Stoltenberg teamed up with Todd Nelson and lost in quarterfinals to Pieter Aldrich and Danie Visser.
Stefan Edberg and Petr Korda were the defending champions, but lost in the first round to Gary Muller and Danie Visser.
Paul Haarhuis and Mark Koevermans were the defending champions, but competed this year with different partners. Haarhuis teamed up with Jacco Eltingh and lost in the semifinals to Henrik Holm and Anders Järryd, while Koevermans teamed up with Jan Apell and lost in the first round to Javier Sánchez and Daniel Vacek.
Andre Agassi and Petr Korda were the defending champions, but Agassi chose not to participate. Korda played along Ivan Lendl, but lost in the first round to Neil Borwick and Simon Youl.
Pieter Aldrich and Danie Visser were the defending champions, but Aldrich did not compete this year. Visser teamed up with Gary Muller and lost in the quarterfinals to Nick Brown and Richard Vogel.