# 2005 Idea Prokom Open – Singles

Rafael Nadal was the defending champion, but did not participate.
Gaël Monfils won the title, defeating Florian Mayer 7–6$^{(8–6)}$, 4–6, 7–5 in the final.

## Seeds

* Mariano Puerta (first round)
* Gastón Gaudio (withdrew due to a shoulder injury)
* Guillermo Coria (semifinals)
* Carlos Moyá (second round)
* Filippo Volandri (second round)
* José Acasuso (quarterfinals)
* Igor Andreev (quarterfinals)
* Victor Hănescu (quarterfinals)

## 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 |
| | Florian Mayer | 6 | 5 | 6 | | | | |
| 3 | Guillermo Coria | 4 | 7 | 3 | | | | |
| 3 | Guillermo Coria | 4 | 7 | 3 | Florian Mayer | 6$^6$ | 6 | 5 |
| | | | | | Gaël Monfils | 7$^8$ | 4 | 7 |
| | Potito Starace | 6 | 5 | 4 | Gaël Monfils | 7$^8$ | 4 | 7 |
| | Gaël Monfils | 3 | 7 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Puerta | 4 | 6$^1$ | | | | | | | | | | | | | | | |
| | J Nieminen | 6 | 7$^7$ | | | J Nieminen | 3 | 6 | 7$^8$ | | | | | | | | | |
| Q | A Portas | 6$^2$ | 6 | 4 | | N Almagro | 6 | 4 | 6$^6$ | | | | | | | | | |
| | N Almagro | 7$^7$ | 3 | 6 | | | | | | | J Nieminen | 2 | 2 | | | | | |
| | M Zabaleta | 4 | 6 | 1 | | | | | | | F Mayer | 6 | 6 | | | | | |
| | F Mayer | 6 | 4 | 6 | | F Mayer | 6 | 7 | | | | | | | | | | |
| WC | Ł Kubot | 3 | 1 | | 5 | F Volandri | 3 | 5 | | | | | | | | | | |
| 5 | F Volandri | 6 | 6 | | | | | | | | | | | | F Mayer | 6 | 5 | 6 |
| 3 | G Coria | 6 | 4 | | | | | | | | | | | 3 | G Coria | 4 | 7 | 3 |
| WC | G Kuerten | 3 | 0$^r$ | | 3 | G Coria | 3 | 6 | 6 | | | | | | | | | |
| Q | M Matkowski | 0 | 7$^7$ | 1 | | F Mantilla | 6 | 3 | 3 | | | | | | | | | |
| | F Mantilla | 6 | 6$^2$ | 6 | | | | | | 3 | G Coria | 6 | 7$^7$ | | | | | |
| | Ó Hernández | 6 | 1 | 4 | | | | | | 7 | I Andreev | 4 | 6$^5$ | | | | | |
| | R Sabău | 2 | 6 | 6 | | R Sabău | 3 | 1$^r$ | | | | | | | | | | |
| | G García López | 2 | 7$^7$ | 2 | 7 | I Andreev | 6 | 5 | | | | | | | | | | |
| 7 | I Andreev | 6 | 6$^4$ | 6 | | | | | | | | | | | | | | |

### 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 |
| 6 | J Acasuso | 7 | 4 | 7 | | | | | | | | | | | | | | |
| | J Vaněk | 5 | 6 | 5 | 6 | J Acasuso | 6 | 6 | | | | | | | | | | |
| | A di Mauro | 3 | 7 | 1 | WC | A Chadaj | 3 | 4 | | | | | | | | | | |
| WC | A Chadaj | 6 | 5 | 6 | | | | | | 6 | J Acasuso | 6 | 4 | 4 | | | | |
| | S Koubek | 4 | 2 | | | | | | | | P Starace | 4 | 6 | 6 | | | | |
| | P Starace | 6 | 6 | | | P Starace | 2 | 7$^7$ | 7 | | | | | | | | | |
| Q | M Fyrstenberg | 7$^7$ | 3 | 5 | 4 | C Moyá | 6 | 6$^0$ | 5 | | | | | | | | | |
| 4 | C Moyá | 6$^5$ | 6 | 7 | | | | | | | | | | | P Starace | 6 | 5 | 4 |
| 8 | V Hănescu | 7$^7$ | 5 | 6 | | | | | | | | | | | G Monfils | 3 | 7 | 6 |
| | A Montañés | 6$^3$ | 7 | 3 | 8 | V Hănescu | 6 | 6 | | | | | | | | | | |
| | P Kohlschreiber | 5 | 3 | | | A Costa | 3 | 4 | | | | | | | | | | |
| | A Costa | 7 | 6 | | | | | | | 8 | V Hănescu | 3 | 3 | | | | | |
| LL | A Mackin | 3 | 1 | | | | | | | | G Monfils | 6 | 6 | | | | | |
| | J Mónaco | 6 | 6 | | | J Mónaco | 4 | 6$^5$ | | | | | | | | | | |
| | G Monfils | 6 | 6 | | | G Monfils | 6 | 7$^7$ | | | | | | | | | | |
| Q | JA Marín | 0 | 4 | | | | | | | | | | | | | | | |