# 2019 Poznań Open – Singles

Hubert Hurkacz was the defending champion but lost in the semifinals to Rudolf Molleker.
Tommy Robredo won the title after defeating Molleker 5–7, 6–4, 6–1 in the final.

## Seeds

All seeds receive a bye into the second round.
* Hubert Hurkacz (semifinals)
* Roberto Carballés Baena (second round, retired)
* Dennis Novak (third round)
* Elias Ymer (second round)
* Pedro Sousa (quarterfinals)
* Pedro Martínez (second round)
* Sebastian Ofner (third round)
* Gianluca Mager (quarterfinals)
* Oscar Otte (third round)
* Quentin Halys (quarterfinals)
* João Domingues (third round)
* Filippo Baldi (third round)
* Alessandro Giannessi (quarterfinals)
* Enrique López Pérez (third round)
* Rudolf Molleker (final)
* Blaž Rola (second 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

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1/WC | Hubert Hurkacz | 6 | 6 | | | | | | | | | | |
| 5 | Pedro Sousa | 1 | 4 | | | | | | | | | | |
| 5 | Pedro Sousa | 1 | 4 | | 1/WC | Hubert Hurkacz | 4 | 4 | | | | | |
| | | | | | 15 | Rudolf Molleker | 6 | 6 | | | | | |
| 15 | Rudolf Molleker | 6 | 2 | 6 | 15 | Rudolf Molleker | 6 | 6 | | | | | |
| 10 | Quentin Halys | 4 | 6 | 4 | | | | | | | | | |
| 10 | Quentin Halys | 4 | 6 | 4 | | | | | 15 | Rudolf Molleker | 7 | 4 | 1 |
| | | | | | | | | | | Tommy Robredo | 5 | 6 | 6 |
| 8 | Gianluca Mager | 7 | 5 | 3 | | | | | | | | | | Tommy Robredo | 5 | 6 | 6 |
| | Tommy Robredo | 5 | 7 | 6 | | | | | | | | | |
| | Tommy Robredo | 5 | 7 | 6 | | Tommy Robredo | 6 | 6 | | | | | |
| | | | | | Q | Andrea Vavassori | 2 | 1 | | | | | |
| Q | Andrea Vavassori | 7$^7$ | 6 | | Q | Andrea Vavassori | 2 | 1 | | | | | |
| 13 | Alessandro Giannessi | 6$^5$ | 1 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1/WC | H Hurkacz | 7$^7$ | 6 | | | | | | | | | | |
| PR | D Altmaier | 6 | 6 | | PR | D Altmaier | 6$^5$ | 0 | | | | | | | | | | |
| | T Gabashvili | 0 | 4 | | | | | | | 1/WC | H Hurkacz | 6 | 6 | | | | | |
| | T Griekspoor | 4 | 6 | 6 | | | | | | 14 | E López Pérez | 4 | 3 | | | | | |
| WC | D Michalski | 6 | 3 | 2 | | T Griekspoor | 6$^4$ | 3 | | | | | | | | | | |
| | | | | | 14 | E López Pérez | 7$^7$ | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 1/WC | H Hurkacz | 6 | 6 |
| | | | | | | | | | | | | | | | 5 | P Sousa | 1 | 4 |
| | | | | | 11 | J Domingues | 6 | 6 | | | | | | | | | | |
| WC | W Marek | 4 | 1 | | ITF | S Bangoura | 4 | 1 | | | | | | | | | | |
| ITF | S Bangoura | 6 | 6 | | | | | | | 11 | J Domingues | 3 | 6 | 3 | | | | |
| | Carlos Boluda-Purkiss | 1 | 3 | | | | | | | 5 | P Sousa | 6 | 3 | 6 | | | | |
| | A Vatutin | 6 | 6 | | | A Vatutin | 2 | 6 | 4 | | | | | | | | | |
| | | | | | 5 | P Sousa | 6 | 2 | 6 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | E Ymer | 6 | 4 | 1 | | | | | | | | | | |
| | Jacob Grills | 1 | 3 | | | Z Kolář | 3 | 6 | 6 | | | | | | | | | | |
| | Z Kolář | 6 | 6 | | | | | | | | Z Kolář | 6 | 1 | 4 | | | | | |
| | Ze Zhang | 4 | 6 | 6$^2$ | | | | | | 15 | R Molleker | 4 | 6 | 6 | | | | | |
| | V Durasovic | 6 | 2 | 7$^7$ | | V Durasovic | 4 | 3 | | | | | | | | | | | |
| | | | | | 15 | R Molleker | 6 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 15 | R Molleker | 6 | 2 | 6 |
| | | | | | | | | | | | | | | | 10 | Q Halys | 4 | 6 | 4 |
| | | | | | 10 | Q Halys | 6 | 6 | | | | | | | | | | | |
| | F Argüello | 7$^7$ | 6$^5$ | 6$^5$ | | N Gombos | 3 | 4 | | | | | | | | | | | |
| | N Gombos | 6$^0$ | 7$^7$ | 7$^7$ | | | | | | 10 | Q Halys | 6 | 2 | 6 | | | | | |
| ITF | Pietro Rondoni | 6$^3$ | 4 | | | | | | | 7 | S Ofner | 4 | 6 | 3 | | | | | |
| | A Arnaboldi | 7$^7$ | 6 | | | A Arnaboldi | 3 | 7$^8$ | 2 | | | | | | | | | | |
| | | | | | 7 | S Ofner | 6 | 6$^6$ | 6 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | G Mager | 7$^7$ | 6 | | | | | | | | | | | |
| | M Moraing | 3 | 5 | | ITF | C Heyman | 6$^3$ | 4 | | | | | | | | | | | |
| ITF | Christopher Heyman | 6 | 7 | | | | | | | 8 | G Mager | 6 | 6 | | | | | | |
| ITF | R Brancaccio | 5 | 6$^5$ | | | | | | | 12 | F Baldi | 1 | 1 | | | | | | |
| | J Hernández-Fernández | 7 | 7$^7$ | | | J Hernández-Fernández | 6 | 6$^2$ | 0 | | | | | | | | | | |
| | | | | | 12 | F Baldi | 3 | 7$^7$ | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 8 | G Mager | 7 | 5 | 3 |
| | | | | | | | | | | | | | | | | T Robredo | 5 | 7 | 6 |
| | | | | | 16 | B Rola | 4 | 6$^3$ | | | | | | | | | | | |
| Q | J Berrettini | 2 | 7$^7$ | 1 | | T Robredo | 6 | 7$^7$ | | | | | | | | | | | |
| | T Robredo | 6 | 6$^5$ | 6 | | | | | | | T Robredo | 6 | 5 | 6 | | | | | |
| | R Ortega Olmedo | 6 | 6$^5$ | 6 | | | | | | 3 | D Novak | 3 | 7 | 2 | | | | | |
| ITF | J Barranco Cosano | 3 | 7$^7$ | 4 | | R Ortega Olmedo | 0 | 4 | | | | | | | | | | | |
| | | | | | 3 | D Novak | 6 | 6 | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | P Martínez | 4 | 4 | | | | | | | | | | |
| | JP Varillas | 3 | 7 | 4 | Q | A Vavassori | 6 | 6 | | | | | | | | | | |
| Q | A Vavassori | 6 | 5 | 6 | | | | | | Q | A Vavassori | 7$^7$ | 6 | | | | | |
| | A Bega | 6 | 6 | | | | | | | 9 | O Otte | 6$^3$ | 2 | | | | | |
| WC | Michał Dembek | 3 | 3 | | | A Bega | 6 | 6$^3$ | 3 | | | | | | | | | |
| | | | | | 9 | O Otte | 1 | 7$^7$ | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | | Q | A Vavassori | 7$^7$ | 6 |
| | | | | | | | | | | | | | | | 13 | A Giannessi | 6$^5$ | 1 |
| | | | | | 13 | A Giannessi | 7 | 3 | 6 | | | | | | | | | |
| | C Lestienne | 3 | 7 | 3 | | S Nagal | 5 | 6 | 3 | | | | | | | | | |
| | S Nagal | 6 | 5 | 6 | | | | | | 13 | A Giannessi | 7$^7$ | 4 | 6 | | | | |
| | D Masur | 6 | 7$^7$ | | | | | | | | D Masur | 6$^4$ | 6 | 3 | | | | |
| WC | K Żuk | 4 | 6$^2$ | | | D Masur | 5 | | | | | | | | | | | |
| | | | | | 2 | R Carballés Baena | 0$^r$ | | | | | | | | | | | |