# 2019 Libéma Open – Men's singles

Adrian Mannarino defeated Jordan Thompson in the final, 7–6$^{(9–7)}$, 6–3 to win the men's singles tennis title at the 2019 Rosmalen Grass Court Championships. It was Mannarino's maiden ATP Tour singles title in his seventh final. Thompson was also contesting for his maiden title.
Richard Gasquet was the defending champion, but lost to Thompson in the semifinals.

## Seeds

The top four seeds receive a bye into the second round.
* Stefanos Tsitsipas (second round)
* Borna Ćorić (semifinals)
* Alex de Minaur (quarterfinals)
* Fernando Verdasco (second round)
* David Goffin (quarterfinals)
* Frances Tiafoe (second round)
* Cristian Garín (quarterfinals)
* Richard Gasquet (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 |
| 8 | Richard Gasquet | 5 | 3 | | | | |
| | Jordan Thompson | 7 | 6 | | | | |
| | Jordan Thompson | 7 | 6 | | Jordan Thompson | 6$^7$ | 3 |
| | | | | | Adrian Mannarino | 7$^9$ | 6 |
| | Adrian Mannarino | 4 | 6 | 7$^7$ | Adrian Mannarino | 7$^9$ | 6 |
| 2/WC | Borna Ćorić | 6 | 3 | 6$^4$ | | | |

### 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 |
| | | | | | 1 | S Tsitsipas | 4 | 6 | 4 | | | | | | | | | |
| Q | J Sinner | 6$^4$ | 3 | | | N Jarry | 6 | 3 | 6 | | | | | | | | | |
| | N Jarry | 7$^7$ | 6 | | | | | | | | N Jarry | 6$^8$ | 4 | | | | | |
| | L Sonego | 7 | 4 | 4 | | | | | | 8 | R Gasquet | 7$^{10}$ | 6 | | | | | |
| | M Kukushkin | 5 | 6 | 6 | | M Kukushkin | 4 | 3 | | | | | | | | | | |
| | A Bedene | 7$^7$ | 6$^5$ | 4 | 8 | R Gasquet | 6 | 6 | | | | | | | | | | |
| 8 | R Gasquet | 6$^3$ | 7$^7$ | 6 | | | | | | | | | | | 8 | R Gasquet | 5 | 3 |
| | | | | | | | | | | | | | | | | J Thompson | 7 | 6 |
| | | | | | 3 | A de Minaur | 7 | 6 | | | | | | | | | | |
| LL | T Fabbiano | 6$^{10}$ | 5 | | | A Seppi | 5 | 3 | | | | | | | | | | |
| | A Seppi | 7$^{12}$ | 7 | | | | | | | 3 | A de Minaur | 6 | 2 | 3 | | | | |
| | J Thompson | 3 | 6 | 6 | | | | | | | J Thompson | 4 | 6 | 6 | | | | |
| Q | T Paul | 6 | 1 | 4 | | J Thompson | 6 | 6 | | | | | | | | | | |
| | J Sousa | 2 | 6$^0$ | | 6 | F Tiafoe | 3 | 2 | | | | | | | | | | |
| 6 | F Tiafoe | 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 |
| 5 | D Goffin | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | A Davidovich Fokina | 0 | 2 | | 5 | D Goffin | 6 | 7 | | | | | | | | | | | |
| | M Ebden | 4 | 5 | | | P-H Herbert | 3 | 5 | | | | | | | | | | | |
| | P-H Herbert | 6 | 7 | | | | | | | 5 | D Goffin | 6 | 5 | 3 | | | | | |
| WC | T de Bakker | 2 | 1 | | | | | | | | A Mannarino | 4 | 7 | 6 | | | | | |
| | A Mannarino | 6 | 6 | | | A Mannarino | 1 | 6 | 6 | | | | | | | | | | |
| | | | | | 4 | F Verdasco | 6 | 3 | 4 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | A Mannarino | 4 | 6 | 7$^7$ |
| 7 | C Garín | 6 | 6 | | | | | | | | | | | | 2/WC | B Ćorić | 6 | 3 | 6$^4$ |
| Q | S Caruso | 1 | 4 | | 7 | C Garín | 7 | 7 | | | | | | | | | | | |
| | R Haase | 5 | 7$^7$ | 7$^7$ | | R Haase | 5 | 5 | | | | | | | | | | | |
| | U Humbert | 7 | 6$^2$ | 6$^4$ | | | | | | 7 | C Garín | 7$^7$ | 3 | 6$^6$ | | | | | |
| WC | J Rodionov | 6$^2$ | 4 | | | | | | | 2/WC | B Ćorić | 6$^4$ | 6 | 7$^8$ | | | | | |
| | T Fritz | 7$^7$ | 6 | | | T Fritz | 6 | 3 | 3 | | | | | | | | | | |
| | | | | | 2/WC | B Ćorić | 4 | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Bradley Klahn (first round)
* Thomas Fabbiano (qualifying competition, lucky loser)
* Jason Jung (first round)
* Alex Bolt (first round)
* Tommy Paul (qualified)
* Alejandro Davidovich Fokina (qualified)
* Lukáš Lacko (first round)
* Salvatore Caruso (qualified)

### Qualifiers

* Alejandro Davidovich Fokina
* Jannik Sinner
* Salvatore Caruso
* Tommy Paul

### Lucky loser

* Thomas Fabbiano

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Bradley Klahn | 6 | 4 | 2 | | | | |
| | Andrea Arnaboldi | 4 | 6 | 6 | | | | |
| | Andrea Arnaboldi | 4 | 6 | 6 | | Andrea Arnaboldi | 6$^5$ | 5 |
| | | | | | 6 | Alejandro Davidovich Fokina | 7$^7$ | 7 |
| WC | Nicolas Mahut | 2 | 4 | | 6 | Alejandro Davidovich Fokina | 7$^7$ | 7 |
| 6 | Alejandro Davidovich Fokina | 6 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Thomas Fabbiano | 4 | 6 | 6 | | | | |
| WC | Emil Ruusuvuori | 6 | 3 | 1 | | | | |
| WC | Emil Ruusuvuori | 6 | 3 | 1 | 2 | Thomas Fabbiano | 4 | 2 |
| | | | | | Alt | Jannik Sinner | 6 | 6 |
| Alt | Jannik Sinner | 6$^6$ | 7$^7$ | 6 | Alt | Jannik Sinner | 6 | 6 |
| 7 | Lukáš Lacko | 7$^8$ | 6$^5$ | 2 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Jason Jung | 2 | 7 | 2 | | | | | |
| | Marcos Giron | 6 | 5 | 6 | | | | | |
| | Marcos Giron | 6 | 5 | 6 | | Marcos Giron | 3 | 6 | 3 |
| | | | | | 8 | Salvatore Caruso | 6 | 3 | 6 |
| | Filip Horanský | 3 | 2 | | 8 | Salvatore Caruso | 6 | 3 | 6 |
| 8 | Salvatore Caruso | 6 | 6 | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Alex Bolt | 4 | 2 | | | | |
| | Daniel Brands | 6 | 6 | | | | |
| | Daniel Brands | 6 | 6 | | Daniel Brands | 5 | 4 |
| | | | | 5 | Tommy Paul | 7 | 6 |
| | Egor Gerasimov | 4 | 3 | 5 | Tommy Paul | 7 | 6 |
| 5 | Tommy Paul | 6 | 6 | | | | |