# 2001 Croatia Open – Singles

Marcelo Ríos was the defending champion but did not compete that year.
Carlos Moyá won in the final 6–4, 3–6, 7–6$^{(7–2)}$ against Jérôme Golmard.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Carlos Moyá (champion)
* Albert Portas (second round)
* Bohdan Ulihrach (second round)
* Michal Tabara (second round)
* Jérôme Golmard (final)
* Ivan Ljubičić (quarterfinals)
* Félix Mantilla (quarterfinals)
* Agustín Calleri (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
| 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 | Final | Final | Final | Final | Final |
| WC/1 | C Moyá | 5 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | J Vaněk | 7 | 4 | 3 | WC/1 | C Moyá | 6 | 5 | 6 | | | | | | | | | | | | | | |
| | E B Álvarez | 6 | 6 | | | E B Álvarez | 4 | 7 | 1 | | | | | | | | | | | | | | |
| | T Zíb | 1 | 2 | | | | | | | WC/1 | C Moyá | 6 | 6 | | | | | | | | | | |
| WC | M Tkalec | 6 | 6$^7$ | 3 | | | | | | | A Sávolt | 4 | 4 | | | | | | | | | | |
| | A Sávolt | 4 | 7$^9$ | 6 | | A Sávolt | 3 | 2 | | | | | | | | | | | | | | | |
| | M Puerta | 6 | 6$^5$ | 0 | 8 | A Calleri | 6 | 3 | r | | | | | | | | | | | | | | |
| 8 | A Calleri | 4 | 7$^7$ | 6 | | | | | | | | | | | WC/1 | C Moyá | 6 | 7 | | | | | |
| 3 | B Ulihrach | 6 | 6 | | | | | | | | | | | | | D Nalbandian | 4 | 5 | | | | | |
| | T Behrend | 4 | 3 | | 3 | B Ulihrach | 2 | 1 | | | | | | | | | | | | | | | |
| Q | I Moldovan | 6 | 1 | 1 | | D Nalbandian | 6 | 6 | | | | | | | | | | | | | | | |
| | D Nalbandian | 3 | 6 | 6 | | | | | | | D Nalbandian | 6 | 6 | | | | | | | | | | |
| Q | I Božič | 3 | 7$^{12}$ | 3 | | | | | | 7 | F Mantilla | 2 | 3 | | | | | | | | | | |
| | Ó Serrano | 6 | 6$^{10}$ | 6 | | Ó Serrano | 2 | 2 | | | | | | | | | | | | | | | |
| | M Hantschk | 6$^3$ | 2 | | 7 | F Mantilla | 6 | 6 | | | | | | | | | | | | | | | |
| 7 | F Mantilla | 7$^7$ | 6 | | | | | | | | | | | | | | | | WC/1 | Carlos Moyá | 6 | 3 | 7$^7$ |
| 5 | J Golmard | 6 | 6 | | | | | | | | | | | | | | | | 5 | Jérôme Golmard | 4 | 6 | 6$^2$ |
| | G Bastl | 3 | 3 | | 5 | J Golmard | 2 | | | | | | | | | | | | | | | | |
| | M Damm | 2 | 3 | | | L Horna | 2 | r | | | | | | | | | | | | | | | |
| | L Horna | 6 | 6 | | | | | | | 5 | J Golmard | 7 | 7 | | | | | | | | | | |
| | A Montañés | 6 | 3 | 6 | | | | | | | A Montañés | 5 | 5 | | | | | | | | | | |
| Q | G Galimberti | 3 | 6 | 1 | | A Montañés | 6 | 6 | | | | | | | | | | | | | | | |
| Q | M Martelli | 4 | 4 | | 4 | M Tabara | 2 | 0 | | | | | | | | | | | | | | | |
| 4 | M Tabara | 6 | 6 | | | | | | | | | | | | 5 | J Golmard | 7 | 6 | | | | | |
| 6 | I Ljubičić | 7$^{10}$ | 6 | | | | | | | | | | | | | A Voinea | 5 | 3 | | | | | |
| | F Browne | 6$^8$ | 2 | | 6 | I Ljubičić | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| WC | I Vajda | 2 | 5 | | | F Luzzi | 2 | 6$^2$ | | | | | | | | | | | | | | | |
| | F Luzzi | 6 | 7 | | | | | | | 6 | I Ljubičić | 6$^6$ | 6 | 3 | | | | | | | | | |
| | C Doseděl | 1 | 4 | | | | | | | | A Voinea | 7$^8$ | 4 | 6 | | | | | | | | | |
| | A Voinea | 6 | 6 | | | A Voinea | 7$^7$ | 0 | 6 | | | | | | | | | | | | | | |
| | G Puentes | 1 | 4 | | 2 | A Portas | 6$^1$ | 6 | 4 | | | | | | | | | | | | | | |
| 2 | A Portas | 6 | 6 | | | | | | | | | | | | | | | | | | | | |