| Doubles | |
|---|---|
| 1989 South Australian Open | |
| Champions |  Neil Broad  Stefan Kruger |
| Runners-up |  Mark Kratzmann  Glenn Layendecker |
| Score | 6–2, 7–6 |
Darren Cahill and Mark Kratzmann were the defending champions but they competed with different partners that year, Cahill with Mark Woodforde and Kratzmann with Glenn Layendecker.
Cahill and Woodforde lost in the semifinals to Neil Broad and Stefan Kruger.
Kratzmann and Layendecker lost in the final 6–2, 7–6 against Broad and Kruger.
Darren Cahill / Mark Woodforde (semifinals) Brad Drewett / Wally Masur (first round) Broderick Dyke / 
Tom Nijssen (semifinals)
Patrik Kühnen / Udo Riglewski (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | D Cahill M Woodforde | 4 | 6 | 6 | |||||||||||||||||||||||
| J Stoltenberg T Woodbridge | 6 | 3 | 4 | 1 | D Cahill M Woodforde | 6 | 1 | 6 | |||||||||||||||||||
 O Delaître T Theine | 4 | 5 | R Barlow M Koevermans | 1 | 6 | 1 | |||||||||||||||||||||
| R Barlow M Koevermans | 6 | 7 | 1 | D Cahill M Woodforde | 4 | 3 | |||||||||||||||||||||
| 4 | P Kühnen U Riglewski | 3 | 3 | N Broad S Kruger | 6 | 6 | |||||||||||||||||||||
| N Broad S Kruger | 6 | 6 | N Broad S Kruger | 6 | 6 | ||||||||||||||||||||||
| D Macpherson S Youl | 6 | 6 | D Macpherson S Youl | 4 | 3 | ||||||||||||||||||||||
 J Apell M Tideman | 3 | 2 | N Broad S Kruger | 6 | 7 | ||||||||||||||||||||||
A Mronz  C Suk | 3 | 4 | M Kratzmann G Layendecker | 2 | 6 | ||||||||||||||||||||||
| S Barr R Rasheed | 6 | 6 | S Barr R Rasheed | 3 | 6 | ||||||||||||||||||||||
 I Flego G Ivanišević | 4 | 4 | 3 | B Dyke T Nijssen | 6 | 7 | |||||||||||||||||||||
| 3 | B Dyke T Nijssen | 6 | 6 | 3 | B Dyke T Nijssen | 4 | 4 | ||||||||||||||||||||
| J Anderson J Morgan | 3 | 6 | M Kratzmann G Layendecker | 6 | 6 | ||||||||||||||||||||||
 A Olhovskiy A Volkov | 6 | 7 | A Olhovskiy A Volkov | 7 | 3 | 2 | |||||||||||||||||||||
| M Kratzmann G Layendecker | 4 | 7 | 6 | M Kratzmann G Layendecker | 6 | 6 | 6 | ||||||||||||||||||||
| 2 | B Drewett W Masur | 6 | 6 | 1 | |||||||||||||||||||||||
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.
John Fitzgerald and Anders Järryd were the defending champions but only Järryd competed that year with Jakob Hlasek.
David Pate and Scott Warner were the defending champions but only Pate competed that year with Scott Davis.
Ken Flach and Robert Seguso were the defending champions but lost in the first round to Tim Pawsat and Laurie Warder.
Darren Cahill and Mark Kratzmann were the defending champions and lost in the second round to Stefan Edberg and Pete Sampras.
Mark Kratzmann and Wally Masur were the defending champions but only Masur competed that year with Pat Cash.
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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.
Rick Leach and Jim Pugh were the defending champions, but lost in the semifinals to Grant Connell and Glenn Michibata.
Pieter Aldrich and Danie Visser won the title, defeating Connell and Michibata 6–4, 4–6, 6–1, 6–4, in the final.
Ivan Lendl and Bill Scanlon were the defending champions, but did not participate this year.
The men's doubles tournament at the 1988 Australian Open was held from 11 through 24 January 1988 on the outdoor hard courts at the Flinders Park in Melbourne, Australia. Rick Leach and Jim Pugh won the title, defeating Jeremy Bates and Peter Lundgren in the final.
The men's doubles tournament at the 1989 French Open was held from 29 May until 11 June 1989 on the outdoor clay courts at the Stade Roland Garros in Paris, France. Jim Grabb and Patrick McEnroe won the title, defeating Mansour Bahrami and Éric Winogradsky in the final.
The men's doubles tournament at the 1989 US Open was held from August 28 to September 10, 1989, on the outdoor hard courts of the USTA National Tennis Center in New York City, United States. John McEnroe and Mark Woodforde won the title, defeating Ken Flach and Robert Seguso in the final.
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.
The men's doubles event at the 1991 French Open tennis tournament was held from 27 May until 9 June 1991 on the outdoor clay courts at the Stade Roland Garros in Paris, France. John Fitzgerald and Anders Järryd won the title, defeating Goran Ivanišević and Petr Korda in the final.
Andre Agassi and Petr Korda were the defending champions, but Agassi did not compete this year. Korda teamed up with Stefan Edberg and lost in second round to Cyril Suk and Daniel Vacek.
Darren Cahill and Mark Kratzmann were the defending champions, but lost in the second round to Ken Flach and Sven Salumaa.
Darren Cahill and Sandon Stolle were the defending champions, but Cahill did not compete this year. Stolle teamed up with John Fitzgerald and lost in the first round to Jared Palmer and Richey Reneberg.