# 2018 Sparkassen Open – Singles

Nicola Kuhn was the defending champion but lost in the first round to Yannick Hanfmann.
Hanfmann won the title after defeating Jozef Kovalík 6–2, 3–6, 6–3 in the final.

## Seeds

* Pablo Cuevas (quarterfinals)
* Roberto Carballés Baena (quarterfinals)
* Jaume Munar (first round)
* Florian Mayer (first round)
* Radu Albot (withdrew)
* Jürgen Zopp (second round)
* Yannick Hanfmann (champion)
* Martin Kližan (first round)
* Jozef Kovalík (final)

## 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 |
| 9 | Jozef Kovalík | 6 | 6 | | | | | |
| Alt | Arthur De Greef | 2 | 3 | | | | | |
| Alt | Arthur De Greef | 2 | 3 | 9 | Jozef Kovalík | 2 | 6 | 3 |
| | | | | 7 | Yannick Hanfmann | 6 | 3 | 6 |
| | Andrea Arnaboldi | 4 | 2 | 7 | Yannick Hanfmann | 6 | 3 | 6 |
| 7 | Yannick Hanfmann | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | P Cuevas | 6 | 7$^7$ | | | | | | | | | | | | | | |
| Q | M Janvier | 3 | 6$^4$ | | 1 | P Cuevas | 6 | 6 | | | | | | | | | |
| Q | Marvin Netuschil | 6 | 6 | | Q | M Netuschil | 3 | 3 | | | | | | | | | |
| LL | D Dima | 3 | 1 | | | | | | | 1 | P Cuevas | 6$^1$ | 3 | | | | |
| WC | D Masur | 6 | 7 | | | | | | | 9 | J Kovalík | 7$^7$ | 6 | | | | |
| | S Travaglia | 4 | 5 | | WC | D Masur | 2 | 2 | | | | | | | | | |
| | R Quiroz | 1 | 0 | | 9 | J Kovalík | 6 | 6 | | | | | | | | | |
| 9 | J Kovalík | 6 | 6 | | | | | | | | | | | 9 | J Kovalík | 6 | 6 |
| 4 | F Mayer | 6$^1$ | 6 | 2 | | | | | | | | | | Alt | A De Greef | 2 | 3 |
| Alt | A De Greef | 7$^7$ | 2 | 6 | Alt | A De Greef | 6 | 7$^7$ | | | | | | | | | |
| | A Vatutin | 6$^8$ | 5 | | | R Dutra Silva | 4 | 6$^5$ | | | | | | | | | |
| | R Dutra Silva | 7$^{10}$ | 7 | | | | | | | Alt | A De Greef | 6 | 6 | | | | |
| | T Kamke | 1 | 3 | | | | | | | | H Dellien | 4 | 1 | | | | |
| | H Dellien | 6 | 6 | | | H Dellien | 6 | 3 | 6 | | | | | | | | |
| WC | R Molleker | 7 | 3 | 4 | 6 | J Zopp | 2 | 6 | 1 | | | | | | | | |
| 6 | J Zopp | 5 | 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 |
| 8 | M Kližan | 6 | 0 | 4 | | | | | | | | | | | | | | |
| Alt | M Cuevas | 3 | 6 | 6 | Alt | M Cuevas | 4 | 6 | 4 | | | | | | | | | |
| | M Moraing | 6 | 6 | | | M Moraing | 6 | 2 | 6 | | | | | | | | | |
| Q | K Coppejans | 2 | 1 | | | | | | | | M Moraing | 2 | 0$^r$ | | | | | |
| | A Arnaboldi | 7 | 4 | 7 | | | | | | | A Arnaboldi | 6 | 0 | | | | | |
| | S Ofner | 5 | 6 | 5 | | A Arnaboldi | 6 | 4 | 6 | | | | | | | | | |
| Q | J Šátral | 6 | 2 | 6 | Q | J Šátral | 4 | 6 | 4 | | | | | | | | | |
| 3 | J Munar | 4 | 6 | 3 | | | | | | | | | | | | A Arnaboldi | 4 | 2 |
| 7 | Y Hanfmann | 6 | 6 | | | | | | | | | | | | 7 | Y Hanfmann | 6 | 6 |
| WC | N Kuhn | 1 | 3 | | 7 | Y Hanfmann | 3 | 7$^7$ | 6 | | | | | | | | | |
| | V Galović | 3 | 6$^2$ | | | D Brown | 6 | 6$^5$ | 2 | | | | | | | | | |
| | D Brown | 6 | 7$^7$ | | | | | | | 7 | Y Hanfmann | 4 | 6 | 6 | | | | |
| WC | T Bellucci | 3 | 4 | | | | | | | 2 | R Carballés Baena | 6 | 4 | 2 | | | | |
| | Y Maden | 6 | 6 | | | Y Maden | 6 | 2 | 5 | | | | | | | | | |
| | C Ruud | 2 | 7 | 6$^3$ | 2 | R Carballés Baena | 4 | 6 | 7 | | | | | | | | | |
| 2 | R Carballés Baena | 6 | 5 | 7$^7$ | | | | | | | | | | | | | | |