# 2015 Powiat Poznański Open – Singles

Kristína Kučová was the defending champion, but lost to Stephanie Vogt in the first round.
Petra Cetkovská won the title by defeating Jeļena Ostapenko in the final, 3–6, 7–5, 6–2.

## Seeds

* Sesil Karatantcheva (second round)
* Kiki Bertens (semifinals)
* Richèl Hogenkamp (quarterfinals)
* Jeļena Ostapenko (final)
* Kristína Kučová (first round)
* Ons Jabeur (quarterfinals)
* Romina Oprandi (second round)
* Barbora Krejčíková (quarterfinals)

## Main 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 |
| Q | Martina Borecká | 6 | 6$^6$ | 2 | | | | | |
| | Petra Cetkovská | 3 | 7$^8$ | 6 | | | | | |
| | Petra Cetkovská | 3 | 7$^8$ | 6 | | Petra Cetkovská | 3 | 7 | 6 |
| | | | | | 4 | Jeļena Ostapenko | 6 | 5 | 2 |
| 4 | Jeļena Ostapenko | 6 | 2 | 6 | 4 | Jeļena Ostapenko | 6 | 5 | 2 |
| 2 | Kiki Bertens | 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 | S Karatantcheva | 6 | 7 | | | | | | | | | | | | | | | | |
| | K Piter | 2 | 5 | | 1 | S Karatantcheva | 0 | 6 | 6$^2$ | | | | | | | | | | |
| Q | M Borecká | 4 | 7 | 6 | Q | M Borecká | 6 | 2 | 7$^7$ | | | | | | | | | | |
| | P Özgen | 6 | 5 | 2 | | | | | | Q | M Borecká | 1 | 7$^7$ | 6 | | | | | |
| WC | N Vaidišová | 6$^2$ | 6 | 7 | | | | | | WC | N Vaidišová | 6 | 6$^1$ | 1 | | | | | |
| Q | C Dinu | 7$^7$ | 3 | 5 | WC | N Vaidišová | 6 | 0 | 6 | | | | | | | | | | |
| | S Vogt | 6 | 2 | 6 | | S Vogt | 4 | 6 | 3 | | | | | | | | | | |
| 5 | K Kučová | 4 | 6 | 1 | | | | | | | | | | | Q | M Borecká | 6 | 6$^6$ | 2 |
| 3 | R Hogenkamp | 7$^7$ | 6 | | | | | | | | | | | | | P Cetkovská | 3 | 7$^8$ | 6 |
| | A Schäfer | 6$^3$ | 2 | | 3 | R Hogenkamp | 7$^7$ | 7 | | | | | | | | | | | |
| | S Cîrstea | 6 | 7 | | | S Cîrstea | 6$^4$ | 5 | | | | | | | | | | | |
| WC | N Siedliska | 1 | 5 | | | | | | | 3 | R Hogenkamp | 4 | 6 | 2 | | | | | |
| | P Cetkovská | 6 | 2 | 6 | | | | | | | P Cetkovská | 6 | 1 | 6 | | | | | |
| | S Shapatava | 4 | 6 | 4 | | P Cetkovská | 6 | 7$^9$ | | | | | | | | | | | |
| WC | M Fręch | 7$^8$ | 2 | 6$^4$ | 7 | R Oprandi | 3 | 6$^7$ | | | | | | | | | | | |
| 7 | R Oprandi | 6$^6$ | 6 | 7$^7$ | | | | | | | | | | | | | | | |

### 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 | O Jabeur | 6 | 2 | 6 | | | | | | | | | | | | | | | |
| | F Molinero | 1 | 6 | 1 | 6 | O Jabeur | 7 | 6 | | | | | | | | | | | |
| | M Sakkari | 6 | 6 | | | M Sakkari | 5 | 1 | | | | | | | | | | | |
| Q | E Alexandrova | 1 | 3 | | | | | | | 6 | O Jabeur | 3 | 4 | | | | | | |
| | A Brianti | 1 | 6 | 3 | | | | | | 4 | J Ostapenko | 6 | 6 | | | | | | |
| | T Mrdeža | 6 | 4 | 6 | | T Mrdeža | 6 | 3 | 4 | | | | | | | | | | |
| WC | N Suk | 2 | 1 | | 4 | J Ostapenko | 3 | 6 | 6 | | | | | | | | | | |
| 4 | J Ostapenko | 6 | 6 | | | | | | | | | | | | 4 | J Ostapenko | 6 | 2 | 6 |
| 8 | B Krejčíková | 6 | 6 | | | | | | | | | | | | 2 | K Bertens | 3 | 6 | 3 |
| | A Vrljić | 1 | 1 | | 8 | B Krejčíková | 7$^7$ | 6 | | | | | | | | | | | |
| | A Amanmuradova | 2 | 2 | | | K Stewart | 6$^4$ | 2 | | | | | | | | | | | |
| | K Stewart | 6 | 6 | | | | | | | 8 | B Krejčíková | 6 | 1 | 1 | | | | | |
| Q | C Paquet | 2 | 6 | 3 | | | | | | 2 | K Bertens | 3 | 6 | 6 | | | | | |
| | R-L Jani | 6 | 2 | 6 | | R-L Jani | 5 | 6$^1$ | | | | | | | | | | | |
| | Y Bonaventure | 6 | 1 | 2 | 2 | K Bertens | 7 | 7$^7$ | | | | | | | | | | | |
| 2 | K Bertens | 3 | 6 | 6 | | | | | | | | | | | | | | | |