# 2001 UBS Open – Singles

Àlex Corretja was the defending champion but lost in the semifinals to Jiří Novák.
Novák won in the final 6–1, 6–7$^{(5–7)}$, 7–5 against Juan Carlos Ferrero.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Marat Safin (first round)
* Juan Carlos Ferrero (final)
* Sébastien Grosjean (semifinals)
* Àlex Corretja (semifinals)
* Roger Federer (first round)
* Franco Squillari (quarterfinals)
* Guillermo Coria (first round)
* Hicham Arazi (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
| 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 | Final | Final | Final | Final | Final |
| 1 | M Safin | 4 | 7$^7$ | 4 | | | | | | | | | | | | | | | | | | | | |
| | J Balcells | 6 | 6$^4$ | 6 | | J Balcells | 3 | 2 | | | | | | | | | | | | | | | | |
| Q | O Burrieza | 4 | 7$^7$ | 1 | | M Kratochvil | 6 | 6 | | | | | | | | | | | | | | | | |
| | M Kratochvil | 6 | 6$^3$ | 6 | | | | | | | M Kratochvil | 4 | 2 | | | | | | | | | | | |
| | F Mantilla | 6 | 7$^7$ | | | | | | | | J Novák | 6 | 6 | | | | | | | | | | | |
| | H Levy | 1 | 6$^2$ | | | F Mantilla | 3 | 2 | | | | | | | | | | | | | | | | |
| | J Novák | 6 | 6 | | | J Novák | 6 | 6 | | | | | | | | | | | | | | | | |
| 7 | G Coria | 2 | 4 | | | | | | | | | | | | | J Novák | 3 | 6 | 6 | | | | | |
| 4 | À Corretja | 6 | 6 | | | | | | | | | | | | 4 | À Corretja | 6 | 3 | 4 | | | | | |
| WC | I Heuberger | 3 | 2 | | 4 | À Corretja | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | W Eschauer | 6 | 7$^7$ | | Q | W Eschauer | 3 | 2 | | | | | | | | | | | | | | | | |
| | A Costa | 0 | 6$^3$ | | | | | | | 4 | À Corretja | 6 | 6$^4$ | 6 | | | | | | | | | | |
| | G Gaudio | 6 | 6 | | | | | | | | I Ljubičić | 3 | 7$^7$ | 3 | | | | | | | | | | |
| | M Rosset | 4 | 3 | | | G Gaudio | 6$^5$ | 7$^7$ | 1 | | | | | | | | | | | | | | | |
| | I Ljubičić | 6 | 6 | | | I Ljubičić | 7$^7$ | 6$^2$ | 6 | | | | | | | | | | | | | | | |
| 5 | R Federer | 2 | 1 | | | | | | | | | | | | | | | | | | Jiří Novák | 6 | 6$^5$ | 7 |
| 6 | F Squillari | 7 | 6 | | | | | | | | | | | | | | | | | 2 | Juan Carlos Ferrero | 1 | 7$^7$ | 5 |
| WC | G Bastl | 5 | 4 | | 6 | F Squillari | 4 | 6 | 6 | | | | | | | | | | | | | | | |
| | S Bruguera | 6 | 2 | 4 | | A Martín | 6 | 4 | 2 | | | | | | | | | | | | | | | |
| | A Martín | 1 | 6 | 6 | | | | | | 6 | F Squillari | 0 | 1 | | | | | | | | | | | |
| Q | L Manta | 4 | 4 | | | | | | | 3 | S Grosjean | 6 | 6 | | | | | | | | | | | |
| | N Lapentti | 6 | 6 | | | N Lapentti | 6 | 4 | 6$^2$ | | | | | | | | | | | | | | | |
| | Á Calatrava | 5 | 2 | | 3 | S Grosjean | 4 | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| 3 | S Grosjean | 7 | 6 | | | | | | | | | | | | 3 | S Grosjean | 4 | 4 | | | | | | |
| 8 | H Arazi | 1 | 6$^6$ | | | | | | | | | | | | 2 | J C Ferrero | 6 | 6 | | | | | | |
| | F Clavet | 6 | 7$^8$ | | | F Clavet | 6$^5$ | 7$^7$ | 1 | | | | | | | | | | | | | | | |
| | S Koubek | 2 | 6 | 3 | | C Pioline | 7$^7$ | 6$^5$ | 6 | | | | | | | | | | | | | | | |
| | C Pioline | 6 | 3 | 6 | | | | | | | C Pioline | 2 | 1 | | | | | | | | | | | |
| Q | M Radić | 5 | 6$^1$ | | | | | | | 2 | J C Ferrero | 6 | 6 | | | | | | | | | | | |
| | J Boutter | 7 | 7$^7$ | | | J Boutter | 6$^2$ | 2 | | | | | | | | | | | | | | | | |
| WC | A Di Pasquale | 4 | 6$^3$ | | 2 | J C Ferrero | 7$^7$ | 7 | | | | | | | | | | | | | | | | |
| 2 | J C Ferrero | 6 | 7$^7$ | | | | | | | | | | | | | | | | | | | | | |