| Doubles | |
|---|---|
| 1988 Belgian Open | |
| 1987 Champions |  Bettina Bunge  Katerina Maleeva |
| Champions |  Mercedes Paz  Tine Scheuer-Larsen |
| Runners-up | Katerina Maleeva  Raffaella Reggi |
| Final score | 7–6, 6–1 |
Bettina Bunge and Katerina Maleeva were the defending champions but only Maleeva competed that year with Raffaella Reggi.
Maleeva and Reggi lost in the final 7–6, 6–1 against Mercedes Paz and Tine Scheuer-Larsen.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Zina Garrison / Kathleen Horvath (quarterfinals) Mercedes Paz / Tine Scheuer-Larsen (champions) Katerina Maleeva / Raffaella Reggi (final)
Arantxa Sánchez / 
Sandra Wasserman (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | 6 | 7 | |||||||||||||||||||||||||
| 4 | 6 | 1 | 4 | 6 | 6 | ||||||||||||||||||||||
| 6 | 1 | 6 | 1 | 7 | |||||||||||||||||||||||
| 7 | 6 | 3 | 2 | ||||||||||||||||||||||||
| 3 | 6 | 5 | 6 | 3 | 6 | 6 | |||||||||||||||||||||
| 4 | 7 | 2 | 3 | 1 | 6 | 6 | |||||||||||||||||||||
| 6 | 6 | 6 | 4 | 3 | |||||||||||||||||||||||
| 3 | 3 | 3 | 6 | 1 | |||||||||||||||||||||||
| 6 | 6 | 2 | 7 | 6 | |||||||||||||||||||||||
| 2 | 0 | 0 | 3 | ||||||||||||||||||||||||
| 4 | 6 | 4 | 6 | 6 | |||||||||||||||||||||||
| 4 | 6 | 7 | 4 | 0 | 6 | 5 | |||||||||||||||||||||
| 6 | 2 | 2 | 6 | 4 | 7 | ||||||||||||||||||||||
| 4 | 0 | r | 1 | 4 | |||||||||||||||||||||||
| 1 | 1 | 2 | 6 | 6 | |||||||||||||||||||||||
| 2 | 6 | 6 | |||||||||||||||||||||||||
The following is the result of the 1988 Virginia Slims of Oklahoma singles.
Steffi Graf was the defending champion and won in the final 6–4, 6–4 against Chris Evert.
Steffi Graf was the defending champion but did not compete that year.
Claudia Kohde-Kilsch and Helena Suková were the defending champions but lost in the final 6–2, 4–6, 6–4 against Isabelle Demongeot and Nathalie Tauziat.
Penny Barg and Tine Scheuer-Larsen were the defending champions but did not compete that year.
The 1988 Belgian Open was a women's tennis tournament played on outdoor clay courts in Brussels, Belgium and was part of the Category 1 tier of the 1988 WTA Tour. It was the second edition of the tournament ran from 11 July until 17 July 1988. Fourth-seeded Arantxa Sánchez won the singles final.
Kathleen Horvath was the defending champion but lost in the first round to Silvia La Fratta.
Katrina Adams and Zina Garrison were the defending champions of the doubles event but lost in the quarterfinals of the 1989 Virginia Slims of Florida tennis tournament to Manon Bollegraf and Eva Pfaff.
Steffi Graf and Gabriela Sabatini were the defending champions but only Sabatini competed that year with Betsy Nagelsen.
Neige Dias was the defending champion but lost in the second round to Tine Scheuer-Larsen.
Isabelle Demongeot and Nathalie Tauziat were the defending champions but lost in the quarterfinals to Lise Gregory and Gretchen Magers.
Mercedes Paz and Tine Scheuer-Larsen were the defending champions but only Paz competed that year with Manon Bollegraf.
In the 1989 Volvo Open women's doubles tennis tournament, Sandra Cecchini and Mercedes Paz were the defending champions but only Paz competed that year with Tine Scheuer-Larsen.
Steffi Graf was the defending champion and won in the final 6–4, 6–2 against Katerina Maleeva.
Claudia Kohde-Kilsch and Jana Novotná were the defending champions but only Novotná competed that year with Tine Scheuer-Larsen.
Martina Navratilova and Pam Shriver were the defending champions but only Navratilova competed that year with Iwona Kuczyńska.
Steffi Graf was the defending champion but did not compete that year.
Raffaella Reggi and Sergio Casal were the defending champions but did not turn up in the semifinals to play Martina Navratilova and Emilio Sánchez.
Top-seeded Manuela Maleeva was the defending champion but fell in the quarterfinals to Kate Gompert. Fourth-seed Andrea Temesvári claimed the title and $38,000 first prize money by defeating Zina Garrison in the final.
There was no women's tournament held in the previous year. Sandra Cecchini and Raffaella Reggi were the champions in the 1985 edition. Both players competed this year with different partners. Cecchini teamed up with Sabrina Goleš and lost in the second round to tournament runners-up Claudia Kohde-Kilsch and Helena Suková, while Reggi teamed up with Anne White and lost in the first round to Virginia Ruzici and Catherine Tanvier.
