# 1988 Citibank Open – Singles

Andre Agassi was the defending champion, but took a rest in order to compete at the Nabisco Masters the following week.
Jaime Yzaga won the title by defeating Javier Frana 7–6$^{(7–4)}$, 6–2 in the final.

## Seeds

* Emilio Sánchez (first round)
* Andrei Chesnokov (quarterfinals)
* Aaron Krickstein (second round)
* Luiz Mattar (First round, retired)
* Martín Jaite (semifinals)
* Alberto Mancini (quarterfinals)
* Horacio de la Peña (second round)
* Marcelo Filippini (second 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 |
| | Javier Frana | 7 | 7 | | | |
| | Javier Sánchez | 6 | 5 | | | |
| | Javier Sánchez | 6 | 5 | Javier Frana | 6$^4$ | 2 |
| | | | | Jaime Yzaga | 7$^7$ | 6 |
| 5 | Martín Jaite | 3 | 4 | Jaime Yzaga | 7$^7$ | 6 |
| | Jaime Yzaga | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | E Sánchez | 4 | 4 | | | | | | | | | | | | | | |
| | J Frana | 6 | 6 | | | J Frana | 4 | 6 | 7 | | | | | | | | |
| Q | F Clavet | 3 | 0 | | Q | M Hennemann | 6 | 2 | 6 | | | | | | | | |
| Q | M Hennemann | 6 | 6 | | | | | | | | J Frana | 4 | 7 | 3 | | | |
| | R Viver | 1 | 7 | 6 | | | | | | | D Pérez | 6 | 5 | 5$^r$ | | | |
| | D Pérez | 6 | 5 | 7 | | D Pérez | 6 | 6 | 6 | | | | | | | | |
| Q | F Roig | 6 | 6 | 4 | 7 | H de la Peña | 7 | 2 | 0 | | | | | | | | |
| 7 | H de la Peña | 3 | 7 | 6 | | | | | | | | | | | J Frana | 7 | 7 |
| 3 | A Krickstein | 6 | 3 | 6 | | | | | | | | | | | J Sánchez | 6 | 5 |
| | E Bengoechea | 1 | 6 | 0 | 3 | A Krickstein | 1 | 6 | | | | | | | | | |
| | J Sánchez | 6 | 6 | | | J Sánchez | 6 | 7 | | | | | | | | | |
| WC | M Menezes | 2 | 2 | | | | | | | | J Sánchez | 4 | 6 | 6 | | | |
| | F Roese | 5 | 1 | | | | | | | 6 | A Mancini | 6 | 3 | 2 | | | |
| | C Motta | 7 | 6 | | | C Motta | 6 | 1 | 6 | | | | | | | | |
| WC | J Oncins | 1 | 7 | 0 | 6 | A Mancini | 3 | 6 | 7 | | | | | | | | |
| 6 | A Mancini | 6 | 6 | 6 | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | M Jaite | 6 | 6 | | | | | | | | | | | | | | |
| | R Azar | 0 | 4 | | 5 | M Jaite | 7 | 6 | | | | | | | | | |
| | P Arraya | 7 | 6 | | | P Arraya | 6 | 2 | | | | | | | | | |
| | C Allgårdh | 6 | 3 | | | | | | | 5 | M Jaite | 6 | 6 | | | | |
| Q | C Kist | 6 | 3 | 2 | | | | | | | S Casal | 4 | 4 | | | | |
| | S Casal | 3 | 6 | 6 | | S Casal | 6 | 6 | 6 | | | | | | | | |
| | D Marcelino | 7 | 1 | | | D Marcelino | 2 | 7 | 4 | | | | | | | | |
| 4 | L Mattar | 6 | 0$^r$ | | | | | | | | | | | 5 | M Jaite | 3 | 4 |
| 8 | M Filippini | 6 | 6 | 6 | | | | | | | | | | | J Yzaga | 6 | 6 |
| | M Ingaramo | 7 | 0 | 4 | 8 | M Filippini | 6 | 5 | 0 | | | | | | | | |
| WC | R Jabali | 4 | 1 | | | J Yzaga | 1 | 7 | 6 | | | | | | | | |
| | J Yzaga | 6 | 6 | | | | | | | | J Yzaga | 7 | 7 | | | | |
| | J Courier | 6 | 6 | | | | | | | 2 | A Chesnokov | 5 | 6 | | | | |
| | I Kley | 4 | 2 | | | J Courier | 6 | 0 | 1 | | | | | | | | |
| | P Rebolledo | 6 | 5 | 6 | 2 | A Chesnokov | 1 | 6 | 6 | | | | | | | | |
| 2 | A Chesnokov | 4 | 7 | 7 | | | | | | | | | | | | | |