# 2005 Dutch Open – Singles

Martin Verkerk was the defending champion, but did not participate this year.
Fernando González won the tournament, beating Agustín Calleri in the final, 7–5, 6–3.

## Seeds

* Mariano Puerta (quarterfinals)
* Fernando González (champion)
* Nicolás Massú (quarterfinals)
* Christophe Rochus (second round)
* Luis Horna (first round)
* Victor Hănescu (second round)
* Óscar Hernández (first round)
* Tomas Behrend (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Ivo Minář | 4 | 4 | | | | |
| | Agustín Calleri | 6 | 6 | | | | |
| | Agustín Calleri | 6 | 6 | | Agustín Calleri | 5 | 3 |
| | | | | 2 | Fernando González | 7 | 6 |
| | David Sánchez | 2 | 1 | 2 | Fernando González | 7 | 6 |
| 2 | Fernando González | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | M Puerta | 6 | 6 | | | | | | | | | | | | | |
| | J Tipsarević | 2 | 2 | | 1 | M Puerta | 6 | 6 | | | | | | | | |
| Q | JA Marín | 7$^7$ | 6 | | Q | JA Marín | 2 | 2 | | | | | | | | |
| | F Aldi | 6$^5$ | 1 | | | | | | | M Puerta | 2 | 7 | 6$^4$ | | | |
| | I Minář | 6 | 6 | | | | | | | I Minář | 6 | 5 | 7$^7$ | | | |
| | F Serra | 4 | 2 | | | I Minář | 7$^7$ | 6 | | | | | | | | |
| | S Ventura | 3 | 6 | 6 | | S Ventura | 6$^5$ | 4 | | | | | | | | |
| 7 | Ó Hernández | 6 | 0 | 1 | | | | | | | | | | I Minář | 4 | 4 |
| 4 | C Rochus | 4 | 6 | 7 | | | | | | | | | | A Calleri | 6 | 6 |
| | M Tabara | 6 | 2 | 5 | 4 | C Rochus | 2 | 5 | | | | | | | | |
| WC | M van Gemerden | 6 | | | WC | M van Gemerden | 6 | 7 | | | | | | | | |
| WC | D van Scheppingen | 0 | r | | | | | | WC | M van Gemerden | 4 | 4 | | | | |
| Q | J Benneteau | 4 | 6 | 3 | | | | | | A Calleri | 6 | 6 | | | | |
| | A Calleri | 6 | 2 | 6 | | A Calleri | 7$^7$ | 6 | | | | | | | | |
| WC | S Korteling | 4 | 5 | | 6 | V Hănescu | 6$^5$ | 4 | | | | | | | | |
| 6 | V Hănescu | 6 | 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 |
| 8 | T Behrend | 4 | 5 | | | | | | | | | | | | | | | |
| | D Sánchez | 6 | 7 | | | D Sánchez | 6 | 6 | | | | | | | | | | |
| LL | S Roitman | 6 | 3 | 5 | | Á Calatrava | 2 | 2 | | | | | | | | | | |
| | Á Calatrava | 3 | 6 | 7 | | | | | | | D Sánchez | 6 | 4 | 6 | | | | |
| | D Norman | 7$^7$ | 2 | 3 | | | | | | 3 | N Massú | 3 | 6 | 3 | | | | |
| | J Vaněk | 6$^5$ | 6 | 6 | | J Vaněk | 4 | 5 | | | | | | | | | | |
| Q | N Thomann | 4 | 2 | | 3 | N Massú | 6 | 7 | | | | | | | | | | |
| 3 | N Massú | 6 | 6 | | | | | | | | | | | | | D Sánchez | 2 | 1 |
| 5 | L Horna | 7$^9$ | 3 | 5 | | | | | | | | | | | 2 | F González | 6 | 6 |
| | R Sluiter | 6$^7$ | 6 | 7 | | R Sluiter | 6 | 6$^5$ | 2 | | | | | | | | | |
| Q | R Žitko | 6$^2$ | 3 | | | D Bracciali | 1 | 7$^7$ | 6 | | | | | | | | | |
| | D Bracciali | 7$^7$ | 6 | | | | | | | | D Bracciali | 3 | 3 | | | | | |
| | N Lapentti | 1 | 3 | | | | | | | 2 | F González | 6 | 6 | | | | | |
| | R Vik | 6 | 6 | | | R Vik | 2 | 2 | | | | | | | | | | |
| | K Vliegen | 2 | 1 | | 2 | F González | 6 | 6 | | | | | | | | | | |
| 2 | F González | 6 | 6 | | | | | | | | | | | | | | | |