# 2018 Heilbronner Neckarcup – Singles

Filip Krajinović was the defending champion but chose not to defend his title.
Rudolf Molleker won the title after defeating Jiří Veselý 4–6, 6–4, 7–5 in the final.

## Seeds

* John Millman (first round)
* Jiří Veselý (final)
* Yannick Maden (second round)
* Yannick Hanfmann (second round)
* Jürgen Zopp (first round)
* Henri Laaksonen (quarterfinals)
* Alexey Vatutin (quarterfinals)
* Norbert Gombos (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 | Semifinals | Final | Final | Final | Final | Final |
| | Juan Ignacio Londero | 6 | 3 | 2 | | | | | |
| WC | Rudolf Molleker | 4 | 6 | 6 | | | | | |
| WC | Rudolf Molleker | 4 | 6 | 6 | WC | Rudolf Molleker | 4 | 6 | 7 |
| | | | | | 2 | Jiří Veselý | 6 | 4 | 5 |
| | Kamil Majchrzak | 5 | 2 | | 2 | Jiří Veselý | 6 | 4 | 5 |
| 2 | Jiří Veselý | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Millman | 6 | 1 | 2 | | | | | | | | | | | | | | | |
| | JI Londero | 1 | 6 | 6 | | JI Londero | 7$^7$ | 5 | 6 | | | | | | | | | | |
| WC | D Köpfer | 7 | 6 | | WC | D Köpfer | 6$^2$ | 7 | 3 | | | | | | | | | | |
| Q | D Masur | 5 | 4 | | | | | | | | JI Londero | 6 | 3 | 6 | | | | | |
| | O Otte | 4 | 6 | 7$^8$ | | | | | | | O Otte | 4 | 6 | 3 | | | | | |
| | B Rola | 6 | 3 | 6$^6$ | | O Otte | 7 | 6$^6$ | 7$^8$ | | | | | | | | | | |
| WC | T Pütz | 6 | 4 | 6 | WC | T Pütz | 5 | 7$^8$ | 6$^6$ | | | | | | | | | | |
| 8 | N Gombos | 4 | 6 | 3 | | | | | | | | | | | | JI Londero | 6 | 3 | 2 |
| 4 | Y Hanfmann | 6 | 4 | 6 | | | | | | | | | | | WC | R Molleker | 4 | 6 | 6 |
| | M Polmans | 2 | 6 | 3 | 4 | Y Hanfmann | 6 | 3 | 3 | | | | | | | | | | |
| | E López Pérez | 4 | 3 | | WC | R Molleker | 4 | 6 | 6 | | | | | | | | | | |
| WC | R Molleker | 6 | 6 | | | | | | | WC | R Molleker | 6 | 2 | 6 | | | | | |
| | T Kamke | 0 | 4 | | | | | | | 7 | A Vatutin | 1 | 6 | 4 | | | | | |
| Q | B Zapata Miralles | 6 | 6 | | Q | B Zapata Miralles | 6 | 4 | 2 | | | | | | | | | | |
| | P Krstin | 2 | 2 | | 7 | A Vatutin | 4 | 6 | 6 | | | | | | | | | | |
| 7 | A Vatutin | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | J Zopp | 4 | 6$^5$ | | | | | | | | | | | | | | |
| | M Moraing | 6 | 7$^7$ | | | M Moraing | | | | | | | | | | | |
| | C Ruud | 6$^4$ | 6 | 3 | | D Brown | w/o | | | | | | | | | | |
| | D Brown | 7$^7$ | 4 | 6 | | | | | | | D Brown | 3 | 1$^r$ | | | | |
| | K Majchrzak | 6 | 6 | | | | | | | | K Majchrzak | 6 | 3 | | | | |
| | M Safwat | 3 | 4 | | | K Majchrzak | 6 | 6 | | | | | | | | | |
| | D Novikov | 4 | 0$^r$ | | 3 | Y Maden | 4 | 3 | | | | | | | | | |
| 3 | Y Maden | 6 | 3 | | | | | | | | | | | | K Majchrzak | 5 | 2 |
| 6 | H Laaksonen | 4 | 6 | 6 | | | | | | | | | | 2 | J Veselý | 7 | 6 |
| | A Giannessi | 6 | 4 | 4 | 6 | H Laaksonen | 6$^5$ | 6 | 7 | | | | | | | | |
| | M Bachinger | 2 | 7$^7$ | 3 | Q | B Hassan | 7$^7$ | 2 | 5 | | | | | | | | |
| Q | B Hassan | 6 | 6$^3$ | 6 | | | | | | 6 | H Laaksonen | 3 | 1 | | | | |
| | D King | 4 | 1$^r$ | | | | | | | 2 | J Veselý | 6 | 6 | | | | |
| Q | I Sijsling | 6 | 4 | | Q | I Sijsling | 3 | 6 | 2 | | | | | | | | |
| WC | M Möller | 2 | 2 | | 2 | J Veselý | 6 | 4 | 6 | | | | | | | | |
| 2 | J Veselý | 6 | 6 | | | | | | | | | | | | | | |