# 2017 Koblenz Open – Singles

This was the first edition of the tournament.
Ruben Bemelmans won the title after defeating Nils Langer 6–4, 3–6, 7–6$^{(7–0)}$ in the final.

## Seeds

* Lukáš Rosol (second round)
* Guido Andreozzi (second round)
* Benjamin Becker (withdrew)
* Alessandro Giannessi (second round)
* Marius Copil (first round)
* Teymuraz Gabashvili (second round)
* Marco Trungelliti (first round)
* Grega Žemlja (first 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

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Jeremy Jahn | 1 | 1 | | | | | |
| | Ruben Bemelmans | 6 | 6 | | | | | |
| | Ruben Bemelmans | 6 | 6 | | Ruben Bemelmans | 6 | 3 | 7$^7$ |
| | | | | Q | Nils Langer | 4 | 6 | 6$^0$ |
| Q | Nils Langer | 6 | 6 | Q | Nils Langer | 4 | 6 | 6$^0$ |
| WC | Daniel Masur | 1 | 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 | Semifinals | Semifinals | Semifinals |
| 1 | L Rosol | 4 | 6 | 6 | | | | | | | | | | | |
| | L Đere | 6 | 2 | 4 | 1 | L Rosol | 6$^5$ | 5 | | | | | | | |
| | F Krajinović | 4 | 6 | 6 | | F Krajinović | 7$^7$ | 7 | | | | | | | |
| LL | A Ungur | 6 | 3 | 4 | | | | | | F Krajinović | 6$^4$ | 3$^r$ | | | |
| WC | Florian Broska | 1 | 3 | | | | | | | J Jahn | 7$^7$ | 2 | | | |
| | Jeremy Jahn | 6 | 6 | | | J Jahn | 6 | 6 | | | | | | | |
| Q | M Przysiężny | 6 | 6 | | Q | M Przysiężny | 4 | 3 | | | | | | | |
| 5 | M Copil | 4 | 3 | | | | | | | | | | J Jahn | 1 | 1 |
| Q | Y Marti | 6 | 7$^7$ | | | | | | | | | | R Bemelmans | 6 | 6 |
| | M Marterer | 2 | 6$^1$ | | Q | Y Marti | 7$^{11}$ | 2 | 4 | | | | | | |
| Q | F Horanský | 5 | 5 | | | K de Schepper | 6$^9$ | 6 | 6 | | | | | | |
| | K de Schepper | 7 | 7 | | | | | | | K de Schepper | 4 | 4 | | | |
| Alt | G Barrère | 6 | 2 | 6 | | | | | | R Bemelmans | 6 | 6 | | | |
| | F Gaio | 4 | 6 | 2 | Alt | G Barrère | 2 | 2 | | | | | | | |
| | R Bemelmans | 6 | 6 | | | R Bemelmans | 6 | 6 | | | | | | | |
| 7 | M Trungelliti | 4 | 2 | | | | | | | | | | | | |

### 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 |
| 6 | T Gabashvili | 4 | 6 | 6 | | | | | | | | | | | | | | |
| WC | B Hassan | 6 | 3 | 1 | 6 | T Gabashvili | 3 | 6 | 3 | | | | | | | | | |
| WC | J Choinski | 3 | 5 | | | D Brands | 6 | 1 | 6 | | | | | | | | | |
| | D Brands | 6 | 7 | | | | | | | | D Brands | 6$^0$ | 2 | | | | | |
| | Y Reuter | 1 | 3 | | | | | | | Q | N Langer | 7$^7$ | 6 | | | | | |
| Q | N Langer | 6 | 6 | | Q | N Langer | 6 | 6 | | | | | | | | | | |
| | F Škugor | 4 | 6$^5$ | | 4 | A Giannessi | 2 | 0 | | | | | | | | | | |
| 4 | A Giannessi | 6 | 7$^7$ | | | | | | | | | | | | Q | N Langer | 6 | 6 |
| 8 | G Žemlja | 2 | 5 | | | | | | | | | | | | WC | D Masur | 1 | 3 |
| PR | C-M Stebe | 6 | 7 | | PR | C-M Stebe | 7$^7$ | 7 | | | | | | | | | | |
| | A Golubev | 0 | 3 | | | M Arévalo | 6$^1$ | 5 | | | | | | | | | | |
| | M Arévalo | 6 | 6 | | | | | | | PR | C-M Stebe | 4 | 7 | 4 | | | | |
| WC | D Masur | 7$^7$ | 6 | | | | | | | WC | D Masur | 6 | 5 | 6 | | | | |
| Alt | Y Mertens | 6$^4$ | 3 | | WC | D Masur | 6 | 6 | | | | | | | | | | |
| LL | A Bossel | | | | 2/Alt | G Andreozzi | 1 | 2 | | | | | | | | | | |
| 2/Alt | G Andreozzi | w/o | | | | | | | | | | | | | | | | |