# 2001 Stuttgart Open – Singles

Franco Squillari was the defending champion but lost in the third round to Guillermo Cañas.
Gustavo Kuerten won in the final 6–3, 6–2, 6–4 against Cañas.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. All sixteen seeds received a bye to the second round.
* Gustavo Kuerten (champion)
* Yevgeny Kafelnikov (quarterfinals)
* Arnaud Clément (third round)
* Dominik Hrbatý (third round)
* Fabrice Santoro (second round)
* Franco Squillari (third round)
* Hicham Arazi (second round)
* Guillermo Coria (second round)
* Nicolás Lapentti (quarterfinals)
* Guillermo Cañas (final)
* Andreas Vinciguerra (second round)
* Jiří Novák (semifinals)
* Alberto Martín (quarterfinals)
* Gastón Gaudio (quarterfinals)
* Andrei Pavel (second round)
* Albert Costa (third 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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Gustavo Kuerten | 4 | 7$^7$ | 7 | | | | | |
| 12 | Jiří Novák | 6 | 6$^5$ | 5 | | | | | |
| 12 | Jiří Novák | 6 | 6$^5$ | 5 | 1 | Gustavo Kuerten | 6 | 6 | 6 |
| | | | | | 10 | Guillermo Cañas | 3 | 2 | 4 |
| Q | Marc López | 2 | 2 | | 10 | Guillermo Cañas | 3 | 2 | 4 |
| 10 | Guillermo Cañas | 6 | 6 | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | G Kuerten | 6 | 6 | | | | | | | | | | |
| | A Ilie | 6 | 6 | | | A Ilie | 1 | 2 | | | | | | | | | | |
| | L Burgsmüller | 1 | 3 | | | | | | | 1 | G Kuerten | 6 | 6 | | | | | |
| | M Russell | 2 | 7$^7$ | 3 | | | | | | | T Robredo | 4 | 1 | | | | | |
| | T Robredo | 6 | 6$^5$ | 6 | | T Robredo | 4 | 7$^7$ | 7$^{12}$ | | | | | | | | | |
| | | | | | 15 | A Pavel | 6 | 6$^5$ | 6$^{10}$ | | | | | | | | | |
| | | | | | | | | | | | | | | 1 | G Kuerten | 6 | 6$^6$ | 6 |
| | | | | | | | | | | | | | | 9 | N Lapentti | 4 | 7$^8$ | 3 |
| | | | | | 9 | N Lapentti | 6 | 6 | | | | | | | | | | |
| Q | F López | 6$^4$ | 4 | | | M Hipfl | 2 | 3 | | | | | | | | | | |
| | M Hipfl | 7$^7$ | 6 | | | | | | | 9 | N Lapentti | 7 | 6 | | | | | |
| | C Vinck | 4 | 2 | | | | | | | | D Sánchez | 5 | 4 | | | | | |
| | D Sánchez | 6 | 6 | | | D Sánchez | 6 | 6 | | | | | | | | | | |
| | | | | | 5 | F Santoro | 2 | 1 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | D Hrbatý | 7$^{11}$ | 6 | | | | | | | | | | | |
| | F Clavet | 1 | 6 | 7$^7$ | | F Clavet | 6$^9$ | 3 | | | | | | | | | | | |
| | J Díaz | 6 | 1 | 6$^4$ | | | | | | 4 | D Hrbatý | 6 | 2 | 4 | | | | | |
| WC | J Záhlava | 2 | 4 | | | | | | | 14 | G Gaudio | 1 | 6 | 6 | | | | | |
| | M Rosset | 6 | 6 | | | M Rosset | 3 | 5 | | | | | | | | | | | |
| | | | | | 14 | G Gaudio | 6 | 7 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 14 | G Gaudio | 5 | 7$^7$ | 5 |
| | | | | | | | | | | | | | | | 12 | J Novák | 7 | 6$^5$ | 7 |
| | | | | | 12 | J Novák | 6 | 6 | | | | | | | | | | | |
| | G Blanco | 6 | 6 | | | G Blanco | 3 | 1 | | | | | | | | | | | |
| WC | B Phau | 1 | 1 | | | | | | | 12 | J Novák | 6 | 6 | | | | | | |
| | J Boutter | 6$^5$ | 7$^9$ | 6 | | | | | | | J Boutter | 1 | 4 | | | | | | |
| | J Acasuso | 7$^7$ | 6$^7$ | 3 | | J Boutter | 6$^5$ | 6 | 7 | | | | | | | | | | |
| | | | | | 7 | H Arazi | 7$^7$ | 4 | 5 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | G Coria | 4 | 6$^7$ | | | | | | | | | | | |
| Q | R Fromberg | 4 | 6 | 4 | Q | M López | 6 | 7$^9$ | | | | | | | | | | | |
| Q | M López | 6 | 3 | 6 | | | | | | Q | M López | 5 | 7 | 6 | | | | | |
| | S Bruguera | 6 | 6 | | | | | | | | S Bruguera | 7 | 5 | 1 | | | | | |
| Q | J F Andersen | 4 | 1 | | | S Bruguera | 6 | 6 | | | | | | | | | | | |
| | | | | | 11 | A Vinciguerra | 2 | 3 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | Q | M López | 4 | 6 | 6 |
| | | | | | | | | | | | | | | | 13 | A Martín | 6 | 4 | 3 |
| | | | | | 13 | A Martín | 6 | 6 | | | | | | | | | | | |
| | F Vicente | 7$^7$ | 6 | | | F Vicente | 1 | 3 | | | | | | | | | | | |
| WC | M-K Goellner | 6$^3$ | 4 | | | | | | | 13 | A Martín | 7 | 6 | | | | | | |
| WC | M Kohlmann | 7$^7$ | 3 | 5 | | | | | | 3 | A Clément | 5 | 3 | | | | | | |
| | N Massú | 6$^2$ | 6 | 7 | | N Massú | 4 | 6 | 3 | | | | | | | | | | |
| | | | | | 3 | A Clément | 6 | 3 | 6 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | F Squillari | 6 | 6 | | | | | | | | | | |
| Q | R Wassen | 6 | 4 | 6 | Q | R Wassen | 3 | 1 | | | | | | | | | | |
| | J Balcells | 1 | 6 | 2 | | | | | | 6 | F Squillari | 5 | 4 | | | | | |
| | A Medvedev | 7$^7$ | 6 | | | | | | | 10 | G Cañas | 7 | 6 | | | | | |
| | A Di Pasquale | 6$^5$ | 1 | | | A Medvedev | 3 | 6 | 5 | | | | | | | | | |
| | | | | | 10 | G Cañas | 6 | 2 | 7 | | | | | | | | | |
| | | | | | | | | | | | | | | 10 | G Cañas | 4 | 6 | 6 |
| | | | | | | | | | | | | | | 2 | Y Kafelnikov | 6 | 3 | 3 |
| | | | | | 16 | A Costa | 6 | 5 | 6 | | | | | | | | | |
| | C Pioline | 6 | 6 | | | C Pioline | 4 | 7 | 4 | | | | | | | | | |
| | R Schüttler | 4 | 3 | | | | | | | 16 | A Costa | 4 | 4 | | | | | |
| Q | G Trifu | 5 | 6$^6$ | | | | | | | 2 | Y Kafelnikov | 6 | 6 | | | | | |
| | A Gaudenzi | 7 | 7$^8$ | | | A Gaudenzi | 4 | 6 | r | | | | | | | | | |
| | | | | | 2 | Y Kafelnikov | 6 | 6 | | | | | | | | | | |