| Singles | |
|---|---|
| 2017 The Hague Open | |
| Champion |  Guillermo García López |
| Runner-up |  Ruben Bemelmans |
| Final score | 6–1, 6–7(3–7), 6–2 |
Robin Haase was the defending champion but lost in the first round to Thiemo de Bakker.
Guillermo García López won the title after defeating Ruben Bemelmans 6–1, 6–7(3–7), 6–2 in the final.
Robin Haase (first round)
Taro Daniel (first round)
Gastão Elias (second round)
Sergiy Stakhovsky (second round) Ruben Bemelmans (final) Guillermo García López (champion)
João Souza (first round)
Jozef Kovalík (second round)| Semifinals | Final | ||||||||||||
| WC | Thiemo de Bakker | 3r | |||||||||||
| 6 | Guillermo García López | 4 | |||||||||||
| 6 | Guillermo García López | 6 | 63 | 6 | |||||||||
| 5 | Ruben Bemelmans | 1 | 77 | 2 | |||||||||
| 5 | Ruben Bemelmans | 6 | 6 | ||||||||||
| Q |  Marko Tepavac | 2 | 1 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1/WC | R Haase | 67 | 4 | ||||||||||||||||||||||||
| WC | T de Bakker | 79 | 6 | WC | T de Bakker | 6 | 611 | 6 | |||||||||||||||||||
 R Bellotti | 4 | 6 | 77 | R Bellotti | 4 | 713 | 2 | ||||||||||||||||||||
| Q |  JI Londero | 6 | 1 | 62 | WC | T de Bakker | 6 | 6 | |||||||||||||||||||
| J Domingues | 63 | 4 |  S Tsitsipas | 1 | 4 | ||||||||||||||||||||||
| S Tsitsipas | 77 | 6 | S Tsitsipas | 7 | 6 | ||||||||||||||||||||||
 D Brands | 3 | 64 | 8 | J Kovalík | 5 | 1 | |||||||||||||||||||||
| 8 | J Kovalík | 6 | 77 | WC | T de Bakker | 3r | |||||||||||||||||||||
| 3 | G Elias | 5 | 6 | 6 | 6 | G García López | 4 | ||||||||||||||||||||
 M Bašić | 7 | 3 | 4 | 3 | G Elias | 6 | 1 | 3 | |||||||||||||||||||
| WC | B van de Zandschulp | 4 | 6 | 6 | WC | B van de Zandschulp | 2 | 6 | 6 | ||||||||||||||||||
| Y Mertens | 6 | 3 | 2 | WC | B van de Zandschulp | 4 | 3 | ||||||||||||||||||||
| M González | 6 | 6 | 6 | G García López | 6 | 6 | |||||||||||||||||||||
| Clément Geens | 4 | 2 | M González | 7 | 3 | 4 | |||||||||||||||||||||
| T Griekspoor | 4 | 6 | 2 | 6 | G García López | 5 | 6 | 6 | |||||||||||||||||||
| 6 | G García López | 6 | 1 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | R Bemelmans | 6 | 6 | ||||||||||||||||||||||||
 S Ofner | 2 | 0 | 5 | R Bemelmans | 6 | 2 | 6 | ||||||||||||||||||||
 G Sakharov | 77 | 3 | 6 | G Sakharov | 3 | 6 | 3 | ||||||||||||||||||||
| LL |  M Banes | 64 | 6 | 4 | 5 | R Bemelmans | 6 | 6 | |||||||||||||||||||
| WC | Michiel de Krom | 0 | 3 | PR | S Bolelli | 2 | 4 | ||||||||||||||||||||
| PR | S Bolelli | 6 | 6 | PR | S Bolelli | 6 | 3 | 6 | |||||||||||||||||||
| Q | George von Massow | 65 | 2 | 4 | S Stakhovsky | 4 | 6 | 3 | |||||||||||||||||||
| 4 | S Stakhovsky | 77 | 6 | 5 | R Bemelmans | 6 | 6 | ||||||||||||||||||||
| 7 | J Souza | 65 | 6 | 3 | Q | M Tepavac | 2 | 1 | |||||||||||||||||||
| J De Loore | 77 | 4 | 6 | J De Loore | 6 | 6 | |||||||||||||||||||||
| Í Cervantes | 6 | 6 | Í Cervantes | 2 | 3 | ||||||||||||||||||||||
| Q | S Verbeek | 3 | 4 | J De Loore | 63 | 6 | 3 | ||||||||||||||||||||
| D Gimeno Traver | 3 | 4 | Q | M Tepavac | 77 | 4 | 6 | ||||||||||||||||||||
| Q | M Tepavac | 6 | 6 | Q | M Tepavac | 2 | 6 | 6 | |||||||||||||||||||
| F Krajinović | 7 | 77 | F Krajinović | 6 | 3 | 2 | |||||||||||||||||||||
| 2 | T Daniel | 5 | 62 | ||||||||||||||||||||||||
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