# 2009 Rai Open – Singles

Sebastián Decoud defeated 7–6(2), 6–1 Simon Greul in the first singles' final of this tournament.

## Seeds

* Sergio Roitman (first round)
* Simon Greul (final)
* Roko Karanušić (first round)
* Jiří Vaněk (quarterfinals)
* Ilija Bozoljac (second round)
* Lukáš Rosol (second round)
* Filippo Volandri (second round)
* Alexandre Sidorenko (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

### Final four

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Sebastián Decoud | 6 | 6 | | | | |
| | Marco Crugnola | 1 | 3 | | | | |
| | Marco Crugnola | 1 | 3 | | Sebastián Decoud | 7 | 6 |
| | | | | 2 | Simon Greul | 6$^2$ | 1 |
| | Éric Prodon | 3 | 3 | 2 | Simon Greul | 6$^2$ | 1 |
| 2 | Simon Greul | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | S Roitman | 3 | 6 | 0 | | | | | | | | | | | | | |
| | S Decoud | 6 | 3 | 6 | | S Decoud | 7 | 5 | 6 | | | | | | | | |
| | M Russell | 4 | 3 | | | L Gregorc | 6$^5$ | 7 | 4 | | | | | | | | |
| | L Gregorc | 6 | 6 | | | | | | | | S Decoud | 6 | 6 | | | | |
| | T Tenconi | 6 | 6 | | | | | | | | T Tenconi | 4 | 1 | | | | |
| Q | E Gomes | 2 | 4 | | | T Tenconi | 3 | 6 | 6 | | | | | | | | |
| | M Kukushkin | 2 | 0 | | 6 | L Rosol | 6 | 2 | 3 | | | | | | | | |
| 6 | L Rosol | 6 | 6 | | | | | | | | | | | | S Decoud | 6 | 6 |
| 3 | R Karanušić | 4 | 3 | | | | | | | | | | | | M Crugnola | 1 | 3 |
| Q | T Ascione | 6 | 6 | | Q | T Ascione | 4 | 3 | | | | | | | | | |
| | M Crugnola | 6 | 6 | | | M Crugnola | 6 | 6 | | | | | | | | | |
| | D Muñoz-De La Nava | 1 | 4 | | | | | | | | M Crugnola | 6 | 2 | 6 | | | |
| Q | A Arnaboldi | 7 | 6 | | | | | | | Q | A Arnaboldi | 0 | 6 | 4 | | | |
| SE | A di Mauro | 5 | 1 | | Q | A Arnaboldi | 6$^5$ | 6 | 6 | | | | | | | | |
| | K Anderson | 3 | 4 | | 5 | I Bozoljac | 7 | 3 | 1 | | | | | | | | |
| 5 | I Bozoljac | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7/WC | F Volandri | 6 | 6 | | | | | | | | | | | | | | |
| WC | D Bracciali | 2 | 4 | | 7/WC | F Volandri | 2 | 6 | 6$^0$ | | | | | | | | |
| WC | G Naso | 4 | 1 | | | É Prodon | 6 | 3 | 7 | | | | | | | | |
| | É Prodon | 6 | 6 | | | | | | | | É Prodon | 6 | 6 | | | | |
| | X Malisse | 3 | 2 | | | | | | | 4 | J Vaněk | 3 | 4 | | | | |
| | R Hocevar | 6 | 6 | | | R Hocevar | 3 | 4 | | | | | | | | | |
| LL | S Galvani | 4 | 2 | | 4 | J Vaněk | 6 | 6 | | | | | | | | | |
| 4 | J Vaněk | 6 | 6 | | | | | | | | | | | | É Prodon | 3 | 3 |
| 8 | A Sidorenko | 4 | 3 | | | | | | | | | | | 2 | S Greul | 6 | 6 |
| SE | A Veić | 6 | 6 | | SE | A Veić | 3 | 2 | | | | | | | | | |
| | G Žemlja | 5 | 7 | 4 | | J Huta Galung | 6 | 6 | | | | | | | | | |
| | J Huta Galung | 7 | 5 | 6 | | | | | | | J Huta Galung | 4 | 2 | | | | |
| WC | T Fabbiano | 7 | 6 | | | | | | | 2 | S Greul | 6 | 6 | | | | |
| Q | G Petrazzuolo | 5 | 4 | | WC | T Fabbiano | 0 | 2 | | | | | | | | | |
| | R Bemelmans | 4 | 2 | | 2 | S Greul | 6 | 6 | | | | | | | | | |
| 2 | S Greul | 6 | 6 | | | | | | | | | | | | | | |