# 2015 Open de Rennes – Singles

Steve Darcis was the defending champion, but lost in the second round. Malek Jaziri won the title defeating Igor Sijsling in the final 5–7, 7–5, 6–4

## Seeds

* Robin Haase (first round)
* Santiago Giraldo (first round)
* Steve Darcis (second round)
* Malek Jaziri (champion)
* Filip Krajinović (second round)
* Marsel İlhan (quarterfinals)
* Ivan Dodig (semifinals)
* Illya Marchenko (semifinals)

## 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 |
| 8 | Illya Marchenko | 6$^6$ | 6 | 4 | | | | | |
| | Igor Sijsling | 7$^8$ | 3 | 6 | | | | | |
| | Igor Sijsling | 7$^8$ | 3 | 6 | | Igor Sijsling | 7 | 5 | 4 |
| | | | | | 4 | Malek Jaziri | 5 | 7 | 6 |
| 4 | Malek Jaziri | 6$^5$ | 6 | 7$^7$ | 4 | Malek Jaziri | 5 | 7 | 6 |
| 7 | Ivan Dodig | 7$^7$ | 3 | 6$^3$ | | | | | |

### 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 | Semifinals | Semifinals |
| 1 | R Haase | 2 | 2 | | | | | | | | | | | | | | | | |
| WC | M Teixeira | 6 | 6 | | WC | M Teixeira | 3 | 4 | | | | | | | | | | | |
| | K Khachanov | 4 | 7$^7$ | 7$^7$ | | K Khachanov | 6 | 6 | | | | | | | | | | | |
| | C Hemery | 6 | 6$^5$ | 6$^4$ | | | | | | | K Khachanov | 4 | 3 | | | | | | |
| | N Gomboš | 6 | 6 | | | | | | | 8 | I Marchenko | 6 | 6 | | | | | | |
| | A Arnaboldi | 4 | 2 | | | N Gomboš | 1 | 6 | 5 | | | | | | | | | | |
| | M Authom | 1 | 3 | | 8 | I Marchenko | 6 | 2 | 7 | | | | | | | | | | |
| 8 | I Marchenko | 6 | 6 | | | | | | | | | | | | 8 | I Marchenko | 6$^6$ | 6 | 4 |
| 3 | S Darcis | 7 | 6 | | | | | | | | | | | | | I Sijsling | 7$^8$ | 3 | 6 |
| Q | Jeremy Jahn | 5 | 4 | | 3 | S Darcis | 4 | 2 | | | | | | | | | | | |
| | I Sijsling | 6 | 7$^7$ | | | I Sijsling | 6 | 6 | | | | | | | | | | | |
| Q | R Jouan | 2 | 6$^4$ | | | | | | | | I Sijsling | 6$^8$ | 6 | 7$^7$ | | | | | |
| | J Mertl | 6 | 6 | | | | | | | | J Mertl | 7$^{10}$ | 3 | 6$^3$ | | | | | |
| Q | Romain Barbosa | 4 | 3 | | | J Mertl | 6 | 6 | | | | | | | | | | | |
| WC | M Janvier | 4 | 5 | | 5 | F Krajinović | 3 | 4 | | | | | | | | | | | |
| 5 | F Krajinović | 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 | Semifinals |
| 6 | M İlhan | 2 | 7 | 6 | | | | | | | | | | | | | | | |
| WC | E Couacaud | 6 | 5 | 2 | 6 | M İlhan | 6 | 6 | | | | | | | | | | | |
| Alt | J Eysseric | 6 | 6 | | Alt | J Eysseric | 2 | 4 | | | | | | | | | | | |
| | J-P Smith | 2 | 4 | | | | | | | 6 | M İlhan | 2 | 6 | 2 | | | | | |
| | D Guez | 4 | 4 | | | | | | | 4 | M Jaziri | 6 | 1 | 6 | | | | | |
| | E Ymer | 6 | 6 | | | E Ymer | 1$^r$ | | | | | | | | | | | | |
| Q | James Marsalek | 1 | 2 | | 4 | M Jaziri | 4 | | | | | | | | | | | | |
| 4 | M Jaziri | 6 | 6 | | | | | | | | | | | | 4 | M Jaziri | 6$^5$ | 6 | 7$^7$ |
| 7 | I Dodig | 6 | 6 | | | | | | | | | | | | 7 | I Dodig | 7$^7$ | 3 | 6$^3$ |
| Alt | A Smirnov | 2 | 3 | | 7 | I Dodig | 7 | 7$^7$ | | | | | | | | | | | |
| LL | Sebastien Boltz | 5 | 2 | | | M Copil | 5 | 6$^3$ | | | | | | | | | | | |
| | M Copil | 7 | 6 | | | | | | | 7 | I Dodig | 6 | 4 | 6 | | | | | |
| WC | A Sidorenko | 7$^7$ | 7$^7$ | | | | | | | | V Millot | 4 | 6 | 3 | | | | | |
| | L Vanni | 6$^4$ | 6$^2$ | | WC | A Sidorenko | 4 | 7$^8$ | 1 | | | | | | | | | | |
| | V Millot | 7$^8$ | 6 | | | V Millot | 6 | 6$^6$ | 6 | | | | | | | | | | |
| 2 | S Giraldo | 6$^6$ | 2 | | | | | | | | | | | | | | | | |