# 1988 OTB Open – Women's singles

Camille Benjamin was the defending champion but lost in the semifinals to Terry Phelps.
Gretchen Magers won in the final 7–6, 6–4 against Phelps.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Elly Hakami (quarterfinals)
* Gretchen Magers (champion)
* Wendy White (second round)
* Terry Phelps (final)
* Ann Henricksson (first round)
* Camille Benjamin (semifinals)
* Lisa Bonder (first round)
* Amy Frazier (first round)

## 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 | E Hakami | 6 | 6 | | | | | | | | | | | | | | | | | | |
| | M Quinlan | 2 | 4 | | 1 | E Hakami | 6 | 6 | | | | | | | | | | | | | |
| | J Salmon | 4 | 7 | 0 | | C Bakkum | 4 | 4 | | | | | | | | | | | | | |
| | C Bakkum | 6 | 6 | 6 | | | | | | 1 | E Hakami | 3 | 4 | | | | | | | | |
| | B Herr | 4 | 6 | 6 | | | | | | 6 | C Benjamin | 6 | 6 | | | | | | | | |
| | J Richardson | 6 | 3 | 2 | | B Herr | 3 | 6 | 2 | | | | | | | | | | | | |
| | T Mochizuki | 3 | 6 | | 6 | C Benjamin | 6 | 4 | 6 | | | | | | | | | | | | |
| 6 | C Benjamin | 6 | 7 | | | | | | | | | | | 6 | C Benjamin | 3 | 3 | | | | |
| 4 | T Phelps | 3 | 6 | 7 | | | | | | | | | | 4 | T Phelps | 6 | 6 | | | | |
| | L Barnard | 6 | 0 | 5 | 4 | T Phelps | 6 | 7 | | | | | | | | | | | | | |
| | C Christian | 7 | 6 | | | C Christian | 2 | 6 | | | | | | | | | | | | | |
| | A Leand | 5 | 1 | | | | | | | 4 | T Phelps | 6 | 6 | | | | | | | | |
| | J Ingram | 6 | 7 | | | | | | | | R Reis | 3 | 2 | | | | | | | | |
| | M Brown | 1 | 6 | | | J Ingram | 2 | 1 | | | | | | | | | | | | | |
| | R Reis | 6 | 6 | | | R Reis | 6 | 6 | | | | | | | | | | | | | |
| 7 | L Bonder | 4 | 3 | | | | | | | | | | | | | | | 4 | Terry Phelps | 6 | 4 |
| 5 | A Henricksson | 4 | 0 | | | | | | | | | | | | | | | 2 | Gretchen Magers | 7 | 6 |
| Q | S Martin | 6 | 6 | | Q | S Martin | 2 | 6 | 6 | | | | | | | | | | | | |
| | P Casale | 7 | 6 | 3 | | L Gregory | 6 | 2 | 1 | | | | | | | | | | | | |
| | L Gregory | 5 | 7 | 6 | | | | | | Q | S Martin | 6 | 6 | | | | | | | | |
| | C MacGregor | 6 | 6 | 2 | | | | | | Q | C Cunningham | 1 | 3 | | | | | | | | |
| Q | C Cunningham | 7 | 3 | 6 | Q | C Cunningham | 6 | 6 | | | | | | | | | | | | | |
| | L Allen | 6 | 6 | 4 | 3 | W White | 3 | 1 | | | | | | | | | | | | | |
| 3 | W White | 3 | 7 | 6 | | | | | | | | | | Q | S Martin | 2 | 6 | | | | |
| 8 | A Frazier | 0 | 0 | | | | | | | | | | | 2 | G Magers | 6 | 7 | | | | |
| Q | R Baranski | 6 | 6 | | Q | R Baranski | 3 | 3 | | | | | | | | | | | | | |
| | V Nelson-Dunbar | 6 | 2 | 3 | | A Nishiya | 6 | 6 | | | | | | | | | | | | | |
| | A Nishiya | 1 | 6 | 6 | | | | | | Q | A Nishiya | 6 | 0 | | | | | | | | |
| Q | A Grossman | 6 | 6 | | | | | | | 2 | G Magers | 7 | 6 | | | | | | | | |
| | V Lake | 1 | 3 | | Q | A Grossman | 4 | 3 | | | | | | | | | | | | | |
| | L Antonoplis | 3 | 6 | 1 | 2 | G Magers | 6 | 6 | | | | | | | | | | | | | |
| 2 | G Magers | 6 | 4 | 6 | | | | | | | | | | | | | | | | | |