# 1989 Prudential-Bache Securities Classic – Singles

Andrei Chesnokov was the defending champion but chose to compete at Basel during the same week, losing at the first round.
Andre Agassi won the title by defeating Brad Gilbert 6–2, 6–1 in the final.

## Seeds

* Brad Gilbert (final)
* Andre Agassi (champion)
* Emilio Sánchez (quarterfinals)
* (n/a)
* Jaime Yzaga (semifinals)
* Mikael Pernfors (second round)
* Jim Grabb (first round, retired)
* Andrew Sznajder (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 | Final | Final | Final | Final |
| 1 | Brad Gilbert | 6 | 6 | | | | |
| | Jimmy Brown | 3 | 1 | | | | |
| | Jimmy Brown | 3 | 1 | 1 | Brad Gilbert | 2 | 1 |
| | | | | 2 | Andre Agassi | 6 | 6 |
| 5 | Jaime Yzaga | 1 | 1 | 2 | Andre Agassi | 6 | 6 |
| 2 | Andre Agassi | 6 | 6 | | | | |

### Top half

| 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 |
| 1 | B Gilbert | 6 | 6 | | | | | | | | | | | | | | |
| | P Chamberlin | 2 | 2 | | 1 | B Gilbert | 7 | 2 | 6 | | | | | | | | |
| | R Seguso | 3 | 0 | | | R Reneberg | 6 | 6 | 3 | | | | | | | | |
| | R Reneberg | 6 | 6 | | | | | | | 1 | B Gilbert | 6 | 6 | | | | |
| | D Cassidy | 6 | 6 | 4 | | | | | | | J Arias | 3 | 1 | | | | |
| Q | K Jones | 3 | 7 | 6 | Q | K Jones | 3 | 1 | | | | | | | | | |
| | J Arias | 1 | 6 | 6 | | J Arias | 6 | 6 | | | | | | | | | |
| 8 | A Sznajder | 6 | 4 | 3 | | | | | | | | | | 1 | B Gilbert | 6 | 6 |
| LL | P Johnson | 2 | 6 | 1 | | | | | | | | | | | J Brown | 3 | 1 |
| Q | M Nido | 6 | 3 | 6 | Q | M Nido | 2 | 6 | 6 | | | | | | | | |
| | P Annacone | 4 | 3 | | | K Evernden | 6 | 4 | 1 | | | | | | | | |
| | K Evernden | 6 | 6 | | | | | | | Q | M Nido | 4 | 0 | | | | |
| | M Wostenholme | 3 | 2 | | | | | | | | J Brown | 6 | 6 | | | | |
| | J Brown | 6 | 6 | | | J Brown | 6 | 6 | | | | | | | | | |
| | D Visser | 2 | 6 | | 6/WC | M Pernfors | 2 | 0 | | | | | | | | | |
| 6/WC | M Pernfors | 6 | 7 | | | | | | | | | | | | | | |

### Bottom half

| 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 |
| 5 | J Yzaga | 7 | 6 | | | | | | | | | | | | | | | |
| | S Davis | 5 | 1 | | 5 | J Yzaga | 6 | 7 | | | | | | | | | | |
| | T Högstedt | 7 | 6 | | | T Högstedt | 4 | 6 | | | | | | | | | | |
| | T Wilkison | 6 | 1 | | | | | | | 5 | J Yzaga | 6 | 4 | 6 | | | | |
| Q | R Deppe | 6 | 4 | 3 | | | | | | 3 | E Sánchez | 4 | 6 | 2 | | | | |
| WC | J Ross | 3 | 6 | 6 | WC | J Ross | 6 | 2 | 6 | | | | | | | | | |
| | P Aldrich | 1 | 4 | | 3 | E Sánchez | 3 | 6 | 7 | | | | | | | | | |
| 3 | E Sánchez | 6 | 6 | | | | | | | | | | | | 5 | J Yzaga | 1 | 1 |
| 7 | J Grabb | 3 | 0$^r$ | | | | | | | | | | | | 2 | A Agassi | 6 | 6 |
| | G Layendecker | 6 | 1 | | | G Layendecker | 4 | 3 | | | | | | | | | | |
| WC | T Ho | 4 | 2 | | | D Wheaton | 6 | 6 | | | | | | | | | | |
| | D Wheaton | 6 | 6 | | | | | | | | D Wheaton | 1 | 4 | | | | | |
| Q | MV Washington | 4 | 6 | 3 | | | | | | 2 | A Agassi | 6 | 6 | | | | | |
| | T Witsken | 6 | 3 | 6 | | T Witsken | 5 | 3 | | | | | | | | | | |
| | N Pereira | 3 | 3 | | 2 | A Agassi | 7 | 6 | | | | | | | | | | |
| 2 | A Agassi | 6 | 6 | | | | | | | | | | | | | | | |