# 2018 Moneta Czech Open – Singles

Jiří Veselý was the defending champion but lost in the second round to Elias Ymer.
Jaume Munar won the title after defeating Laslo Đere 6–1, 6–3 in the final.

## Seeds

* Guillermo García López (semifinals)
* Pablo Cuevas (first round)
* Roberto Carballés Baena (first round)
* Guido Pella (quarterfinals)
* Jiří Veselý (second round)
* Mirza Bašić (first round)
* Mikhail Kukushkin (second round, withdrew)
* Radu Albot (second 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 |
| 1 | Guillermo García López | 6$^8$ | 6 | 6$^4$ | | | |
| | Laslo Đere | 7$^{10}$ | 3 | 7$^7$ | | | |
| | Laslo Đere | 7$^{10}$ | 3 | 7$^7$ | Laslo Đere | 1 | 3 |
| | | | | | Jaume Munar | 6 | 6 |
| | Gerald Melzer | 6 | 3 | 2 | Jaume Munar | 6 | 6 |
| | Jaume Munar | 4 | 6 | 6 | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | G García López | 6 | 6 | | | | | | | | | | | | | | |
| | G Sakharov | 4 | 4 | | 1 | G García López | 6 | 7$^7$ | | | | | | | | | |
| Q | M Cuevas | 4 | 3 | | WC | T Bellucci | 1 | 6$^4$ | | | | | | | | | |
| WC | T Bellucci | 6 | 6 | | | | | | 1 | G García López | 6 | 6 | | | | | |
| | J Choinski | 7 | 2 | 4 | | | | | Q | F Gaio | 3 | 4 | | | | | |
| | Z Kolář | 5 | 6 | 6 | | Z Kolář | 5 | 0 | | | | | | | | | |
| Q | F Gaio | 6 | 7$^7$ | | Q | F Gaio | 7 | 6 | | | | | | | | | |
| 6 | M Bašić | 2 | 6$^1$ | | | | | | | | | | 1 | G García López | 6$^8$ | 6 | 6$^4$ |
| 4 | G Pella | 6 | 6 | | | | | | | | | | | L Đere | 7$^{10}$ | 3 | 7$^7$ |
| | N Gombos | 3 | 2 | | 4 | G Pella | 7 | 6 | | | | | | | | | |
| | J Domingues | 6 | 6 | | | J Domingues | 5 | 3 | | | | | | | | | |
| WC | F Horanský | 1 | 3 | | | | | | 4 | G Pella | 4 | 5 | | | | | |
| | R Olivo | 1 | 3 | | | | | | | L Đere | 6 | 7 | | | | | |
| | L Đere | 6 | 6 | | | L Đere | w/o | | | | | | | | | | |
| | A Hoang | 1 | 3 | | 7 | M Kukushkin | | | | | | | | | | | |
| 7 | M Kukushkin | 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 |
| 8 | R Albot | 6 | 6 | | | | | | | | | | | | | | |
| | E Gulbis | 3 | 3 | | 8 | R Albot | 3 | 5 | | | | | | | | | |
| Alt | B Bonzi | 3 | 2 | | | S Caruso | 6 | 7 | | | | | | | | | |
| | S Caruso | 6 | 6 | | | | | | | S Caruso | 4 | 3 | | | | | |
| LL | Marek Jaloviec | 3 | 0 | | | | | | | G Melzer | 6 | 6 | | | | | |
| | G Melzer | 6 | 6 | | | G Melzer | 6 | 6 | | | | | | | | | |
| WC | V Šafránek | 3 | 7$^7$ | 6 | WC | V Šafránek | 1 | 0 | | | | | | | | | |
| 3 | R Carballés Baena | 6 | 6$^2$ | 4 | | | | | | | | | | G Melzer | 6 | 3 | 2 |
| 5 | J Veselý | 6 | 6 | | | | | | | | | | | J Munar | 4 | 6 | 6 |
| Q | G Mager | 3 | 3 | | 5 | J Veselý | 2 | 6 | 4 | | | | | | | | |
| Q | J Šátral | 5 | 6 | 5 | | E Ymer | 6 | 3 | 6 | | | | | | | | |
| | E Ymer | 7 | 4 | 7 | | | | | | E Ymer | 6 | 1 | 1 | | | | |
| Alt | V Millot | 2 | 2$^r$ | | | | | | | J Munar | 3 | 6 | 6 | | | | |
| | J Munar | 6 | 3 | | | J Munar | 6$^6$ | 6 | 7 | | | | | | | | |
| | A Pavlásek | 7$^7$ | 7$^7$ | | | A Pavlásek | 7$^8$ | 4 | 5 | | | | | | | | |
| 2/WC | P Cuevas | 6$^3$ | 6$^4$ | | | | | | | | | | | | | | |