# 2000 UBS Open Gstaad – Singles

Albert Costa was the defending champion, but lost in the semifinals to Mariano Puerta.
Àlex Corretja won the title, defeating Puerta in the final 6–1, 6–3.

## Seeds

A champion seed is indicated in bold while text in italics indicates the round in which that seed was eliminated.
* Àlex Corretja (champion)
* Nicolas Kiefer (second round)
* Juan Carlos Ferrero (first round)
* Albert Costa (semifinals)
* Younes El Aynaoui (first round)
* Franco Squillari (quarterfinals, retired due to illness)
* Marcelo Ríos (quarterfinals)
* Mariano Puerta (final)

## 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 | Àlex Corretja | 7 | 7 | | | | |
| | Gastón Gaudio | 5 | 5 | | | | |
| | Gastón Gaudio | 5 | 5 | 1 | Àlex Corretja | 6 | 6 |
| | | | | 8 | Mariano Puerta | 1 | 3 |
| 4 | Albert Costa | 4 | 3 | 8 | Mariano Puerta | 1 | 3 |
| 8 | Mariano Puerta | 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 | Semifinals |
| 1 | À Corretja | 6 | 4 | 6 | | | | | | | | | | | | | | |
| | R Federer | 4 | 6 | 4 | 1 | À Corretja | 6 | 6 | | | | | | | | | | |
| Q | S Bruguera | 6 | 5 | 2 | | V Spadea | 2 | 2 | | | | | | | | | | |
| | V Spadea | 2 | 7 | 6 | | | | | | 1 | À Corretja | 6$^6$ | 6 | 6 | | | | |
| | G Bastl | 6 | 6 | | | | | | | 7 | M Ríos | 7$^8$ | 1 | 3 | | | | |
| Q | L Arnold Ker | 2 | 1 | | | G Bastl | 3 | 5 | | | | | | | | | | |
| | S Doseděl | 5 | 7$^7$ | 2 | 7 | M Ríos | 6 | 7 | | | | | | | | | | |
| 7 | M Ríos | 7 | 6$^2$ | 6 | | | | | | | | | | | 1 | À Corretja | 7 | 7 |
| 3 | JC Ferrero | 4 | 6$^3$ | | | | | | | | | | | | | G Gaudio | 5 | 5 |
| | G Gaudio | 6 | 7$^7$ | | | G Gaudio | 6 | 4 | 7 | | | | | | | | | |
| | M Mirnyi | 6$^3$ | 7$^7$ | 6 | | M Mirnyi | 2 | 6 | 5 | | | | | | | | | |
| | M Zabaleta | 7$^7$ | 6$^3$ | 3 | | | | | | | G Gaudio | 6 | 4 | | | | | |
| | M Rosset | 6 | 6 | | | | | | | 6 | F Squillari | 1 | 1$^r$ | | | | | |
| WC | M Kratochvil | 3 | 2 | | | M Rosset | 3 | 5 | | | | | | | | | | |
| | R Schüttler | 5 | 5 | | 6 | F Squillari | 6 | 7 | | | | | | | | | | |
| 6 | F Squillari | 7 | 7 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | Y El Aynaoui | 1 | 6 | 4 | | | | | | | | | | | | |
| | F Clavet | 6 | 4 | 6 | | F Clavet | 3 | 5 | | | | | | | | |
| | H Arazi | 3 | 6$^0$ | | | J Novák | 6 | 7 | | | | | | | | |
| | J Novák | 6 | 7$^7$ | | | | | | | J Novák | 3 | 1 | | | | |
| Q | N Thomann | 6 | 2 | 4 | | | | | 4 | A Costa | 6 | 6 | | | | |
| | J Golmard | 4 | 6 | 6 | | J Golmard | 4 | 3 | | | | | | | | |
| | S Koubek | 6 | 3 | 3 | 4 | A Costa | 6 | 6 | | | | | | | | |
| 4 | A Costa | 4 | 6 | 6 | | | | | | | | | 4 | A Costa | 4 | 3 |
| 8 | M Puerta | 6 | 6 | | | | | | | | | | 8 | M Puerta | 6 | 6 |
| | A Di Pasquale | 3 | 4 | | 8 | M Puerta | 6 | 6 | | | | | | | | |
| | F Vicente | 1 | 4 | | | F Mantilla | 0 | 2 | | | | | | | | |
| | F Mantilla | 6 | 6 | | | | | | 8 | M Puerta | 7$^7$ | 6 | | | | |
| | S Grosjean | 6 | 6 | | | | | | | S Grosjean | 6$^4$ | 3 | | | | |
| WC | I Heuberger | 3 | 4 | | | S Grosjean | 6 | 6 | | | | | | | | |
| Q | Á Calatrava | 3 | 6$^2$ | | 2 | N Kiefer | 3 | 1 | | | | | | | | |
| 2 | N Kiefer | 6 | 7$^7$ | | | | | | | | | | | | | |