# 1989 Cincinnati Open – Singles

Mats Wilander was the defending champion but lost in the semifinals to Stefan Edberg.
Brad Gilbert won in the final 6–4, 2–6, 7–6 against Edberg.

## Seeds

* Boris Becker (semifinals)
* Stefan Edberg (final)
* Mats Wilander (semifinals)
* Michael Chang (quarterfinals)
* Brad Gilbert (champion)
* Aaron Krickstein (third round)
* Andrei Chesnokov (second round)
* Jaime Yzaga (quarterfinals)
* Anders Järryd (first round)
* Jonas Svensson (quarterfinals)
* John Fitzgerald (first round)
* Andrés Gómez (quarterfinals)
* Peter Lundgren (first round)
* Jim Courier (third round)
* Alexander Volkov (first round)
* Derrick Rostagno (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Boris Becker | 6 | 3 | 4 | | | | | |
| 5 | Brad Gilbert | 3 | 6 | 6 | | | | | |
| 5 | Brad Gilbert | 3 | 6 | 6 | 5 | Brad Gilbert | 6 | 2 | 7 |
| | | | | | 2 | Stefan Edberg | 4 | 6 | 6 |
| 3 | Mats Wilander | 6 | 6 | | 2 | Stefan Edberg | 4 | 6 | 6 |
| 2 | Stefan Edberg | 7 | 7 | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 1 | B Becker | 6 | 7 | | | | | | | | | | | | | | | |
| | R Leach | 3 | 6 | | 1 | B Becker | 6 | 6 | | | | | | | | | | |
| Q | P McEnroe | 6 | 6 | | Q | P McEnroe | 4 | 1 | | | | | | | | | | |
| Q | M Knowles | 1 | 0 | | | | | | | 1 | B Becker | 6 | 6 | | | | | |
| Q | M Ruah | 2 | 1 | | | | | | | | V Amritraj | 1 | 1 | | | | | |
| | V Amritraj | 6 | 6 | | | V Amritraj | 6 | 7 | | | | | | | | | | |
| | O Delaître | 7 | 6 | | | O Delaître | 3 | 6 | | | | | | | | | | |
| 15 | A Volkov | 6 | 1 | | | | | | | | | | | | 1 | B Becker | 6 | 6 |
| 9 | A Järryd | 3 | 6 | 3 | | | | | | | | | | | 8 | J Yzaga | 1 | 2 |
| | M Davis | 6 | 4 | 6 | | M Davis | 6 | 2 | 6 | | | | | | | | | |
| | O Rahnasto | 1$^r$ | | | | J Brown | 3 | 6 | 4 | | | | | | | | | |
| | J Brown | 4 | | | | | | | | | M Davis | 4 | 6 | 6 | | | | |
| | R Van't Hof | 3 | 6 | 2 | | | | | | 8 | J Yzaga | 6 | 2 | 7 | | | | |
| | D Visser | 6 | 3 | 6 | | D Visser | 4 | 2 | | | | | | | | | | |
| | N Marques | 3 | 3 | | 8 | J Yzaga | 6 | 6 | | | | | | | | | | |
| 8 | J Yzaga | 6 | 6 | | | | | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 4 | M Chang | 6 | 6 | | | | | | | | | | | | | | | | |
| | N Broad | 1 | 1 | | 4 | M Chang | 6 | 5 | 7 | | | | | | | | | | |
| | J Grabb | 6 | 6 | | | J Grabb | 3 | 7 | 6 | | | | | | | | | | |
| | J Frawley | 1 | 3 | | | | | | | 4 | M Chang | 6 | 6 | | | | | | |
| | M Kratzmann | 1 | 2 | | | | | | | 14 | J Courier | 3 | 3 | | | | | | |
| | R Seguso | 6 | 6 | | | R Seguso | 6 | 1 | 4 | | | | | | | | | | |
| | T Wilkison | 2 | 4 | | 14 | J Courier | 3 | 6 | 6 | | | | | | | | | | |
| 14 | J Courier | 6 | 6 | | | | | | | | | | | | 4 | M Chang | 6 | 6 | 3 |
| 11 | J Fitzgerald | 4 | 4 | | | | | | | | | | | | 5 | B Gilbert | 3 | 7 | 6 |
| | P Sampras | 6 | 6 | | | P Sampras | 7 | 2 | 6 | | | | | | | | | | |
| | M Nido | 6 | 0 | 4 | | A Olhovskiy | 5 | 6 | 3 | | | | | | | | | | |
| | A Olhovskiy | 1 | 6 | 6 | | | | | | | P Sampras | 7 | 3 | 4 | | | | | |
| WC | J Ross | 3 | 0 | | | | | | | 5 | B Gilbert | 6 | 6 | 6 | | | | | |
| | J Stoltenberg | 6 | 6 | | | J Stoltenberg | 3 | 2 | | | | | | | | | | | |
| Q | A Moreno | 3 | 4 | | 5 | B Gilbert | 6 | 6 | | | | | | | | | | | |
| 5 | B Gilbert | 6 | 6 | | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 6 | A Krickstein | 6 | 6 | 6 | | | | | | | | | | | | | |
| | A Cherkasov | 7 | 4 | 1 | 6 | A Krickstein | 6 | 7 | | | | | | | | | |
| | C Bailey | 6 | 7 | | | C Bailey | 3 | 5 | | | | | | | | | |
| LL | M Petchey | 2 | 6 | | | | | | 6 | A Krickstein | 6 | 4 | 5 | | | | |
| | T Tulasne | 3 | 1 | | | | | | 12 | A Gómez | 3 | 6 | 7 | | | | |
| | D Pate | 6 | 6 | | | D Pate | 4 | 3 | | | | | | | | | |
| | W Masur | 4 | 4 | | 12 | A Gómez | 6 | 6 | | | | | | | | | |
| 12 | A Gómez | 6 | 6 | | | | | | | | | | | 12 | A Gómez | 0 | 6 |
| 13 | P Lundgren | 5 | 2 | | | | | | | | | | | 3 | M Wilander | 6 | 7 |
| | N Kroon | 7 | 6 | | | N Kroon | 6 | 6 | | | | | | | | | |
| | P Aldrich | 6 | 6 | | | P Aldrich | 3 | 3 | | | | | | | | | |
| Q | M Rincon | 1 | 2 | | | | | | | N Kroon | 3 | 2 | | | | | |
| | J Rive | 4 | 6 | 6 | | | | | 3 | M Wilander | 6 | 6 | | | | | |
| | R Matuszewski | 6 | 4 | 2 | | J Rive | 4 | 4 | | | | | | | | | |
| Q | B Talbot | 3 | 2 | | 3 | M Wilander | 6 | 6 | | | | | | | | | |
| 3 | M Wilander | 6 | 6 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 7 | A Chesnokov | 6 | 7 | | | | | | | | | | | | | | | |
| Q | S Salumaa | 0 | 5 | | 7 | A Chesnokov | 3 | 4 | | | | | | | | | | |
| | M Schapers | 4 | 6 | 3 | | G Muller | 6 | 6 | | | | | | | | | | |
| | G Muller | 6 | 2 | 6 | | | | | | | G Muller | 4 | 2 | | | | | |
| | É Winogradsky | 3 | 6 | 3 | | | | | | 10 | J Svensson | 6 | 6 | | | | | |
| Q | F Hunt | 6 | 1 | 6 | Q | F Hunt | | | | | | | | | | | | |
| | M Anger | 1 | 3 | | 10 | J Svensson | w/o | | | | | | | | | | | |
| 10 | J Svensson | 6 | 6 | | | | | | | | | | | | 10 | J Svensson | 4 | 6 |
| 16 | D Rostagno | 6 | 5 | 3 | | | | | | | | | | | 2 | S Edberg | 6 | 7 |
| | J Frana | 3 | 7 | 6 | | J Frana | 6 | 6 | 2$^r$ | | | | | | | | | |
| | R Krishnan | 1 | 6 | 7 | | R Krishnan | 4 | 7 | 4 | | | | | | | | | |
| WC | B Scanlon | 6 | 3 | 6 | | | | | | | R Krishnan | 4 | 6 | 4 | | | | |
| WC | B Pearce | 3 | 6 | 7 | | | | | | 2 | S Edberg | 6 | 3 | 6 | | | | |
| WC | M Robertson | 6 | 4 | 5 | WC | B Pearce | 4 | 1 | | | | | | | | | | |
| | B Moir | 4 | 3 | | 2 | S Edberg | 6 | 6 | | | | | | | | | | |
| 2 | S Edberg | 6 | 6 | | | | | | | | | | | | | | | |