# 1988 Belgian Open – Singles

Kathleen Horvath was the defending champion but lost in the first round to Silvia La Fratta.
Arantxa Sánchez won in the final 6–0, 7–5 against Raffaella Reggi.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Zina Garrison (quarterfinals)
* Katerina Maleeva (second round)
* Raffaella Reggi (final)
* Arantxa Sánchez (champion)
* Isabel Cueto (semifinals)
* Neige Dias (quarterfinals)
* Kathleen Horvath (first round)
* Mercedes Paz (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking
| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Z Garrison | 6 | 6 | | | | | | | | | | | | | | | | | | |
| | C van Renterghem | 3 | 4 | | 1 | Z Garrison | 7 | 6 | | | | | | | | | | | | | |
| | A Vieira | 6 | 5 | 4 | | C Cohen | 5 | 4 | | | | | | | | | | | | | |
| | C Cohen | 3 | 7 | 6 | | | | | | 1 | Z Garrison | 4 | 5 | | | | | | | | |
| Q | I Varas | 6 | 6 | | | | | | | 5 | I Cueto | 6 | 7 | | | | | | | | |
| | L O'Neill | 3 | 3 | | Q | I Varas | 1 | 0 | | | | | | | | | | | | | |
| | M Strandlund | 2 | 3 | | 5 | I Cueto | 6 | 6 | | | | | | | | | | | | | |
| 5 | I Cueto | 6 | 6 | | | | | | | | | | | 5 | I Cueto | 0 | 4 | | | | |
| 4 | A Sánchez | 6 | 6 | | | | | | | | | | | 4 | A Sánchez | 6 | 6 | | | | |
| | S Meier | 0 | 1 | | 4 | A Sánchez | 6 | 6 | | | | | | | | | | | | | |
| | N Jagerman | 5 | 6 | 6 | | N Jagerman | 3 | 3 | | | | | | | | | | | | | |
| | A Devries | 7 | 1 | 3 | | | | | | 4 | A Sánchez | 6 | 6 | | | | | | | | |
| | O Tsarbopoulou | 4 | 6 | 4 | | | | | | 8 | M Paz | 2 | 2 | | | | | | | | |
| | B Romanò | 6 | 3 | 3/r | | O Tsarbopoulou | 5 | 6 | 2 | | | | | | | | | | | | |
| | S Wasserman | 0 | 2 | | 8 | M Paz | 7 | 2 | 6 | | | | | | | | | | | | |
| 8 | M Paz | 6 | 6 | | | | | | | | | | | | | | | 4 | Arantxa Sánchez | 6 | 7 |
| 7 | K Horvath | 5 | 7 | 4 | | | | | | | | | | | | | | 3 | Raffaella Reggi | 0 | 5 |
| | S La Fratta | 7 | 5 | 6 | | S La Fratta | 7 | 6 | | | | | | | | | | | | | |
| | S Schilder | 1 | 3 | | | P Medrado | 5 | 4 | | | | | | | | | | | | | |
| | P Medrado | 6 | 6 | | | | | | | | S La Fratta | 4 | 2 | | | | | | | | |
| Q | S Niox-Chateau | 6 | 6 | | | | | | | 3 | R Reggi | 6 | 6 | | | | | | | | |
| | S Appelmans | 4 | 2 | | Q | S Niox-Chateau | 4 | 6 | 4 | | | | | | | | | | | | |
| | V Martinek | 1 | 0 | | 3 | R Reggi | 6 | 4 | 6 | | | | | | | | | | | | |
| 3 | R Reggi | 6 | 6 | | | | | | | | | | | 3 | R Reggi | 6 | 6 | | | | |
| 6 | N Dias | 6 | 6 | | | | | | | | | | | | A Kanellopoulou | 2 | 2 | | | | |
| Q | J Jonerup | 1 | 3 | | 6 | N Dias | 6 | 6 | | | | | | | | | | | | | |
| Q | S Dalla Valle | 2 | 0 | | | C Wood | 3 | 1 | | | | | | | | | | | | | |
| | C Wood | 6 | 6 | | | | | | | 6 | N Dias | 5 | 1 | | | | | | | | |
| | A Kanellopoulou | 6 | 7 | | | | | | | | A Kanellopoulou | 7 | 6 | | | | | | | | |
| | T Scheuer-Larsen | 4 | 5 | | | A Kanellopoulou | 1 | 6 | 6 | | | | | | | | | | | | |
| | L Golarsa | 1 | 0 | | 2 | K Maleeva | 6 | 4 | 0 | | | | | | | | | | | | |
| 2 | K Maleeva | 6 | 6 | | | | | | | | | | | | | | | | | | |