# 1999 Rado Swiss Open Gstaad – Singles

Àlex Corretja was the defending champion, but was forced to withdraw at his first round match against tournament runner-up Nicolás Lapentti.
Albert Costa won the title by defeating Nicolás Lapentti 7–6$^{(7–4)}$, 6–3, 6–4 in the final.

## Seeds

* Gustavo Kuerten (second round)
* Àlex Corretja (first round, retired)
* Marcelo Ríos (second round)
* Greg Rusedski (first round)
* Félix Mantilla (semifinals)
* Francisco Clavet (quarterfinals)
* Mariano Zabaleta (second round)
* Albert Costa (champion)

## 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 |
| 8 | Albert Costa | 4 | 7$^7$ | 6 | | | | | |
| | Younes El Aynaoui | 6 | 6$^5$ | 3 | | | | | |
| | Younes El Aynaoui | 6 | 6$^5$ | 3 | 8 | Albert Costa | 7$^7$ | 6 | 6 |
| | | | | | | Nicolás Lapentti | 6$^4$ | 3 | 4 |
| 5 | Félix Mantilla | 4 | 6 | 5 | | Nicolás Lapentti | 6$^4$ | 3 | 4 |
| | Nicolás Lapentti | 6 | 4 | 7 | | | | | |

### 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 | Semifinals |
| 1 | G Kuerten | 6 | 6 | | | | | | | | | | | | | | | |
| | M Puerta | 4 | 4 | | 1 | G Kuerten | 2 | 6 | 6$^6$ | | | | | | | | | |
| LL | R Furlan | 3 | 2 | | | V Spadea | 6 | 2 | 7$^8$ | | | | | | | | | |
| | V Spadea | 6 | 6 | | | | | | | | V Spadea | 3 | 2 | | | | | |
| | S Koubek | 4 | 6 | 6 | | | | | | 8 | A Costa | 6 | 6 | | | | | |
| | K Alami | 6 | 4 | 1 | | S Koubek | 7$^7$ | 1 | 5 | | | | | | | | | |
| WC | L Manta | 1 | 1 | | 8 | A Costa | 6$^3$ | 6 | 7 | | | | | | | | | |
| 8 | A Costa | 6 | 6 | | | | | | | | | | | 8 | A Costa | 4 | 7$^7$ | 6 |
| 3 | M Ríos | 6 | 6$^7$ | 7$^7$ | | | | | | | | | | | Y El Aynaoui | 6 | 6$^5$ | 3 |
| | B Ulihrach | 2 | 7$^9$ | 6$^1$ | 3 | M Ríos | 6$^5$ | 6$^5$ | | | | | | | | | | |
| | Y El Aynaoui | 6 | 6 | | | Y El Aynaoui | 7$^7$ | 7$^7$ | | | | | | | | | | |
| WC | R Federer | 2 | 3 | | | | | | | | Y El Aynaoui | 7$^7$ | 7 | | | | | |
| | G Bastl | 6$^8$ | 4 | | | | | | | 6 | F Clavet | 6$^5$ | 5 | | | | | |
| Q | D Johnson | 7$^{10}$ | 6 | | Q | D Johnson | 4 | 4 | | | | | | | | | | |
| Q | J Balcells | 7 | 1 | 6$^4$ | 6 | F Clavet | 6 | 6 | | | | | | | | | | |
| 6 | F Clavet | 5 | 6 | 7$^7$ | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | F Mantilla | 6 | 6 | | | | | | | | | | | | | | | | |
| | F Squillari | 3 | 2 | | 5 | F Mantilla | 6 | 6 | | | | | | | | | | | |
| | H Arazi | 6 | 7$^7$ | | | H Arazi | 2 | 0 | | | | | | | | | | | |
| | J Novák | 3 | 6$^3$ | | | | | | | 5 | F Mantilla | 3 | 6 | 6 | | | | | |
| | A Di Pasquale | 6 | 5 | 6 | | | | | | | A Di Pasquale | 6 | 3 | 4 | | | | | |
| | F Meligeni | 3 | 7 | 0 | | A Di Pasquale | 7 | 7$^7$ | | | | | | | | | | | |
| | M Rosset | 7$^7$ | 6$^4$ | 6 | | M Rosset | 5 | 6$^3$ | | | | | | | | | | | |
| 4 | G Rusedski | 6$^2$ | 7$^7$ | 2 | | | | | | | | | | | 5 | F Mantilla | 4 | 6 | 5 |
| 7 | M Zabaleta | 4 | 6 | 7$^7$ | | | | | | | | | | | | N Lapentti | 6 | 4 | 7 |
| | C Pioline | 6 | 3 | 6$^4$ | 7 | M Zabaleta | 7$^7$ | 6$^4$ | 3 | | | | | | | | | | |
| | R Schüttler | 2 | 1 | | Q | A Gaudenzi | 6$^5$ | 7$^7$ | 6 | | | | | | | | | | |
| Q | A Gaudenzi | 6 | 6 | | | | | | | Q | A Gaudenzi | 5 | 3 | | | | | | |
| Q | I Ljubičić | 6$^5$ | 6 | 6 | | | | | | | N Lapentti | 7 | 6 | | | | | | |
| | D Vacek | 7$^7$ | 4 | 4 | Q | I Ljubičić | 4 | 6 | 3 | | | | | | | | | | |
| | N Lapentti | 4 | | | | N Lapentti | 6 | 2 | 6 | | | | | | | | | | |
| 2 | À Corretja | 3$^r$ | | | | | | | | | | | | | | | | | |