| Doubles | |
|---|---|
| 1991 Tokyo Indoor | |
| Champions | |
| Runners-up | |
| Final score | 7–5, 2–6, 7–6 |
Guy Forget and Jakob Hlasek were the defending champions, but did not participate this year.
Jim Grabb and Richey Reneberg won the title, defeating Scott Davis and David Pate 7–5, 2–6, 7–6 in the final.
All seeds receive a bye into the second round.
Scott Davis / David Pate (final)
Grant Connell / Glenn Michibata (semifinals)
Todd Woodbridge / Mark Woodforde (second round)
Wayne Ferreira / Piet Norval (second round) Luke Jensen / Laurie Warder (second round)
Goran Ivanišević / Gary Muller (semifinals) Mark Kratzmann / Wally Masur (second round) Rick Leach / David Wheaton (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | 6 | 7 | 6 | ||||||||||
| 6 | 7 | 6 | 3 | ||||||||||
| 1 | 5 | 6 | 6 | ||||||||||
| 7 | 2 | 7 | |||||||||||
| 6 | 6 | ||||||||||||
| 2 | 4 | 3 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | 7 | 6 | |||||||||||||||||||||||||
| 6 | 6 | 5 | 4 | ||||||||||||||||||||||||
| 4 | 1 | 1 | 6 | 6 | |||||||||||||||||||||||
| 7 | 4 | 6 | 4 | 1 | |||||||||||||||||||||||
| 5 | 6 | 4 | 6 | 7 | |||||||||||||||||||||||
| 7 | 4 | 6 | |||||||||||||||||||||||||
| 1 | 6 | 7 | 6 | ||||||||||||||||||||||||
| 6 | 7 | 6 | 3 | ||||||||||||||||||||||||
| 3 | 4 | 3 | |||||||||||||||||||||||||
| WC | 4 | 4 | 6 | 6 | |||||||||||||||||||||||
| 6 | 6 | 4 | 7 | 5 | |||||||||||||||||||||||
| 6 | 6 | 7 | 6 | 6 | 6 | 7 | |||||||||||||||||||||
| 7 | 0 | 5 | 4 | 4 | |||||||||||||||||||||||
| 6 | 6 | 6 | |||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | 6 | 3 | |||||||||||||||||||||||||
| 7 | 6 | 7 | 6 | ||||||||||||||||||||||||
| 6 | 4 | 4 | 3 | ||||||||||||||||||||||||
| 6 | 6 | 6 | 6 | ||||||||||||||||||||||||
| Q | 3 | 3 | 6 | 3 | 6 | ||||||||||||||||||||||
| 4 | 4 | 6 | 2 | ||||||||||||||||||||||||
| 6 | 6 | ||||||||||||||||||||||||||
| 2 | 4 | 3 | |||||||||||||||||||||||||
| 8 | 6 | 6 | 6 | ||||||||||||||||||||||||
| WC | 6 | 4 | 3 | 7 | 2 | ||||||||||||||||||||||
| 7 | 6 | 8 | 6 | 5 | 3 | ||||||||||||||||||||||
| 6 | 5 | 6 | 2 | 3 | 7 | 6 | |||||||||||||||||||||
| 4 | 7 | 4 | 1 | 6 | |||||||||||||||||||||||
| 2 | 6 | 7 | |||||||||||||||||||||||||
Boris Becker and Jakob Hlasek were the defending champions, but Hlasek did not participate this year. Becker partnered Guy Forget, and they won the title, defeating Jim Grabb and Patrick McEnroe 4–6, 6–4, 6–3 in the final.
Kelly Evernden and Todd Witsken were the defending champions but they competed with different partners that year, Evernden with Nicolás Pereira and Witsken with Jorge Lozano.
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.
David Pate and Scott Warner were the defending champions but only Pate competed that year with Scott Davis.
Darren Cahill and Mark Kratzmann were the defending champions and lost in the second round to Stefan Edberg and Pete Sampras.
Paul Annacone and Christo van Rensburg were the defending champions. Annacone participated with John Fitzgerald, and lost in the quarterfinals to Scott Davis and David Pate, while Van Rensburg played with Kevin Curren, and lost in the semifinals to Grant Connell and Glenn Michibata.
Rick Leach and Jim Pugh defeated Connell and Michibata 3–6, 6–4, 6–2, in the final.
Scott Davis and David Pate were the defending champions, but lost in the second round this year.
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 would go on to win the following three majors in 1991.
Scott Davis and David Pate were the defending champions, but were defeated in the semifinals to fellow Americans Kelly Jones and Rick Leach.
For the 1990 Tokyo Indoor doubles Kevin Curren and David Pate were the defending champions, but Curren did not participate this year. Pate partnered Scott Davis, losing in the final.
Rick Leach and Jim Pugh were the defending champions, but did not participate together this year. Leach partnered Kelly Jones, losing in the semifinals. Pugh partnered Derrick Rostagno, losing in the second round.
Rick Leach and Jim Pugh were the defending champions.
Boris Becker and Guy Forget were the defending champions, but Becker did not participate this year. Forget partnered Henri Leconte.
Rick Leach and Jim Pugh were the defending champions, but lost in the third round this year.
The men's doubles tournament at the 1991 US Open was held from August 26 to September 8, 1991, on the outdoor hard courts of the USTA National Tennis Center in New York City, United States. John Fitzgerald and Anders Järryd won the title, defeating Scott Davis and David Pate in the final.
Grant Connell and Glenn Michibata were the defending champions, but lost in the semifinals to tournament runners-up Ken Flach and Robert Seguso.
Patrick Galbraith and Danie Visser were the defending champions, but competed this year with different partners. Galbraith teamed up with Grant Connell and lost in the semifinals to Jim Courier and Mark Knowles, while Visser teamed up with Laurie Warder and lost in the second round, also to Courier and Knowles.
Scott Davis and David Pate were the defending champions, but lost in the first round to Nicolás Pereira and Pete Sampras.
Sergio Casal and Emilio Sánchez successfully defended their title by defeating Carl-Uwe Steeb and Michael Stich in the final, 5–7, 6–4, 6–3.
Brad Drewett and Kim Warwick were the defending champions, but competed this year with different partners. Drewett teamed up with Mark Edmondson and lost in the first round to Chip Hooper and Mike Leach, while Warwick teamed up with Steve Denton and also lost in the first round to Scott Davis and David Pate.
