# 2017 Poznań Open – Singles

Radu Albot was the defending champion but chose not to defend his title.
Alexey Vatutin won the title after defeating Guido Andreozzi 2–6, 7–6$^{(12–10)}$, 6–3 in the final.

## Seeds

* Casper Ruud (second round)
* Florian Mayer (second round)
* Adam Pavlásek (semifinals)
* Jerzy Janowicz (second round)
* Jan Šátral (second round)
* Guido Andreozzi (final)
* Rubén Ramírez Hidalgo (quarterfinals)
* Lukáš Rosol (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 | Final |
| 6 | Guido Andreozzi | 3 | 6 | 6 | | | | | |
| 3 | Adam Pavlásek | 6 | 2 | 2 | | | | | |
| 3 | Adam Pavlásek | 6 | 2 | 2 | 6 | Guido Andreozzi | 6 | 6$^{10}$ | 3 |
| | | | | | | Alexey Vatutin | 2 | 7$^{12}$ | 6 |
| | Gonçalo Oliveira | 6 | 5 | 2 | | Alexey Vatutin | 2 | 7$^{12}$ | 6 |
| | Alexey Vatutin | 2 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | C Ruud | 6 | 6 | | | | | | | | | | | | | | | | |
| WC | VV Cornea | 2 | 3 | | 1 | C Ruud | 6$^5$ | 4 | | | | | | | | | | | |
| | Z Kolař | 6 | 6 | | | Z Kolař | 7$^7$ | 6 | | | | | | | | | | | |
| | Marek Jaloviec | 1 | 0 | | | | | | | | Z Kolař | 5 | 6 | 0 | | | | | |
| | S Fayziev | 2 | 4 | | | | | | | 6 | G Andreozzi | 7 | 3 | 6 | | | | | |
| | K Majchrzak | 6 | 6 | | | K Majchrzak | 4 | 7 | 0 | | | | | | | | | | |
| | M Linzer | 3 | 6 | 3 | 6 | G Andreozzi | 6 | 5 | 6 | | | | | | | | | | |
| 6 | G Andreozzi | 6 | 4 | 6 | | | | | | | | | | | 6 | G Andreozzi | 3 | 6 | 6 |
| 3 | A Pavlásek | 7 | 6 | | | | | | | | | | | | 3 | A Pavlásek | 6 | 2 | 2 |
| Q | J Mridha | 5 | 2 | | 3 | A Pavlásek | 6 | 6 | | | | | | | | | | | |
| | P Krstin | 4 | 6 | 6 | | P Krstin | 1 | 0 | | | | | | | | | | | |
| WC | A Kapaś | 6 | 1 | 4 | | | | | | 3 | A Pavlásek | 6 | 6 | | | | | | |
| Q | M Kestelboim | 6 | 6 | | | | | | | 7 | R Ramírez Hidalgo | 2 | 4 | | | | | | |
| | S Balaji | 4 | 4 | | Q | M Kestelboim | 3 | 2 | | | | | | | | | | | |
| Q | Maciej Rajski | 4 | 1 | | 7 | R Ramírez Hidalgo | 6 | 6 | | | | | | | | | | | |
| 7 | R Ramírez Hidalgo | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | J Šátral | 7$^9$ | 6 | | | | | | | | | | | | | | | |
| | G Clezar | 6$^7$ | 0 | | 5 | J Šátral | 5 | 1 | | | | | | | | | | |
| | J Eysseric | 6 | 6 | | | J Eysseric | 7 | 6 | | | | | | | | | | |
| WC | H Hurkacz | 3 | 4 | | | | | | | | J Eysseric | 6$^2$ | 4 | | | | | |
| | G Oliveira | 6 | 6 | | | | | | | | G Oliveira | 7$^7$ | 6 | | | | | |
| | Petr Michnev | 2 | 4 | | | G Oliveira | 5 | 6 | 6 | | | | | | | | | |
| | J Munar | 6$^1$ | 2 | | 4 | J Janowicz | 7 | 2 | 4 | | | | | | | | | |
| 4 | J Janowicz | 7$^7$ | 6 | | | | | | | | | | | | G Oliveira | 6 | 5 | 2 |
| 8 | L Rosol | 6 | 4 | 6 | | | | | | | | | | | A Vatutin | 2 | 7 | 6 |
| | A Velotti | 4 | 6 | 3 | 8 | L Rosol | 7$^7$ | 6 | | | | | | | | | | |
| WC | Michał Dembek | 6 | 6 | | WC | M Dembek | 6$^3$ | 3 | | | | | | | | | | |
| | Y Reuter | 4 | 2 | | | | | | | 8 | L Rosol | 5 | 6 | 3 | | | | |
| | A Vatutin | 7$^7$ | 6 | | | | | | | | A Vatutin | 7 | 3 | 6 | | | | |
| | A Nedovyesov | 6$^1$ | 3 | | | A Vatutin | 7 | 6 | | | | | | | | | | |
| Q | D Kalenichenko | 1 | 4 | | 2 | F Mayer | 5 | 4 | | | | | | | | | | |
| 2 | F Mayer | 6 | 6 | | | | | | | | | | | | | | | |