# 1989 Great American Bank Classic – Singles

Stephanie Rehe was the defending champion but did not compete that year.
Steffi Graf won in the final 6–4, 7–5 against Zina Garrison.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Steffi Graf (champion)
* Zina Garrison (final)
* Susan Sloane (first round)
* Patty Fendick (second round)
* Lori McNeil (first round)
* Nathalie Tauziat (semifinals)
* Claudia Kohde-Kilsch (quarterfinals)
* Rosalyn Fairbank (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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | S Graf | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | R Simpson | 0 | 0 | | 1 | S Graf | 6 | 6 | | | | | | | | | | | | | | |
| | E Smylie | 5 | 6 | 3 | | B Nagelsen | 1 | 1 | | | | | | | | | | | | | | |
| | B Nagelsen | 7 | 4 | 6 | | | | | | 1 | S Graf | 6 | 6 | | | | | | | | | |
| | I Demongeot | 5 | 6 | 6 | | | | | | 7 | C Kohde-Kilsch | 0 | 0 | | | | | | | | | |
| | S Gomer | 7 | 2 | 1 | | I Demongeot | 1 | 6 | 1 | | | | | | | | | | | | | |
| | E Burgin | 1 | 6 | 5 | 7 | C Kohde-Kilsch | 6 | 3 | 6 | | | | | | | | | | | | | |
| 7 | C Kohde-Kilsch | 6 | 3 | 7 | | | | | | | | | | | 1 | S Graf | 6 | 6 | | | | |
| 4 | P Fendick | 6 | 6 | | | | | | | | | | | | | B Bunge | 1 | 2 | | | | |
| Q | L Harvey-Wild | 4 | 1 | | 4 | P Fendick | 6 | 5 | 0 | | | | | | | | | | | | | |
| | A Grossman | 6 | 6 | | | A Grossman | 3 | 7 | 6 | | | | | | | | | | | | | |
| | E Pfaff | 3 | 1 | | | | | | | | A Grossman | 6 | 5 | 4 | | | | | | | | |
| | J Durie | 6 | 6 | | | | | | | | B Bunge | 2 | 7 | 6 | | | | | | | | |
| | R Casals | 4 | 2 | | | J Durie | 1 | 1 | | | | | | | | | | | | | | |
| | B Bunge | 6 | 6 | | | B Bunge | 6 | 6 | | | | | | | | | | | | | | |
| 5 | L McNeil | 2 | 3 | | | | | | | | | | | | | | | | 1 | Steffi Graf | 6 | 7 |
| 6 | N Tauziat | 6 | 7 | | | | | | | | | | | | | | | | 2 | Zina Garrison | 4 | 5 |
| Q | G Helgeson | 2 | 6 | | 6 | N Tauziat | 6 | 1 | 6 | | | | | | | | | | | | | |
| | H Cioffi | 7 | 1 | 2 | | G Fernández | 3 | 6 | 1 | | | | | | | | | | | | | |
| | G Fernández | 5 | 6 | 6 | | | | | | 6 | N Tauziat | 4 | 6 | 7 | | | | | | | | |
| Q | L Green | 6 | 3 | 6 | | | | | | | R White | 6 | 1 | 6 | | | | | | | | |
| Q | W White | 3 | 6 | 7 | Q | W White | 3 | 4 | | | | | | | | | | | | | | |
| | R White | 7 | 6 | | | R White | 6 | 6 | | | | | | | | | | | | | | |
| 3 | S Sloane | 5 | 3 | | | | | | | | | | | | 6 | N Tauziat | 1 | 5 | | | | |
| 8 | R Fairbank | 6 | 4 | 3 | | | | | | | | | | | 2 | Z Garrison | 6 | 7 | | | | |
| | A Gavaldón | 2 | 6 | 6 | | A Gavaldón | 2 | 5 | | | | | | | | | | | | | | |
| | P Paradis | 1 | 5 | | | G Magers | 6 | 7 | | | | | | | | | | | | | | |
| | G Magers | 6 | 7 | | | | | | | | G Magers | 4 | 5 | | | | | | | | | |
| | A Temesvári | 2 | 6 | | | | | | | 2 | Z Garrison | 6 | 7 | | | | | | | | | |
| | T Phelps | 6 | 7 | | | T Phelps | 5 | 7 | 0 | | | | | | | | | | | | | |
| | J Byrne | 1 | 5 | | 2 | Z Garrison | 7 | 6 | 6 | | | | | | | | | | | | | |
| 2 | Z Garrison | 6 | 7 | | | | | | | | | | | | | | | | | | | |