# 2018 Tashkent Challenger – Singles

Guillermo García López was the defending champion but chose not to defend his title.
Félix Auger-Aliassime won the title after defeating Kamil Majchrzak 6–3, 6–2 in the final.

## Seeds

* Mirza Bašić (quarterfinals)
* Denis Istomin (quarterfinals)
* Enrique López Pérez (first round)
* Lukáš Rosol (first round, withdrew)
* Alexey Vatutin (second round)
* Kamil Majchrzak (final)
* Daniel Brands (second round)
* Mohamed Safwat (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 | Final | Final | Final | Final |
| 6 | Kamil Majchrzak | 7$^7$ | 6 | | | | |
| | Tobias Kamke | 6$^2$ | 3 | | | | |
| | Tobias Kamke | 6$^2$ | 3 | 6 | Kamil Majchrzak | 3 | 2 |
| | | | | Q | Félix Auger-Aliassime | 6 | 6 |
| PR | Egor Gerasimov | 4 | 6$^4$ | Q | Félix Auger-Aliassime | 6 | 6 |
| Q | Félix Auger-Aliassime | 6 | 7$^7$ | | | | |

### Top half

| 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 | M Bašić | 7 | 6 | | | | | | | | | | | | | |
| | I Nedelko | 5 | 4 | 1 | M Bašić | 7 | 7$^7$ | | | | | | | | | |
| | G Oliveira | 6 | 6 | | G Oliveira | 5 | 6$^5$ | | | | | | | | | |
| WC | Dimitriy Voronin | 3 | 2 | | | | | | 1 | M Bašić | 1 | 4 | | | | |
| WC | A Avidzba | 3 | 0 | | | | | | 6 | K Majchrzak | 6 | 6 | | | | |
| | A Nedovyesov | 6 | 6 | | A Nedovyesov | 3 | 6 | 1 | | | | | | | | |
| | Z Kolář | 2 | 2 | 6 | K Majchrzak | 6 | 2 | 6 | | | | | | | | |
| 6 | K Majchrzak | 6 | 6 | | | | | | | | | | 6 | K Majchrzak | 7$^7$ | 6 |
| 4 | L Rosol | | | | | | | | | | | | | T Kamke | 6$^2$ | 3 |
| | N Milojević | w/o | | | N Milojević | 2 | 7 | 1 | | | | | | | | |
| | E Karlovskiy | 7$^7$ | 6 | | E Karlovskiy | 6 | 5 | 6 | | | | | | | | |
| | D-h Lee | 6$^3$ | 4 | | | | | | | E Karlovskiy | 6$^3$ | 1 | | | | |
| Q | R Statham | 4 | 3 | | | | | | | T Kamke | 7$^7$ | 6 | | | | |
| | T Kamke | 6 | 6 | | T Kamke | 6 | 7 | | | | | | | | | |
| WC | J Karimov | 4 | 3 | 8 | M Safwat | 0 | 5 | | | | | | | | | |
| 8 | M Safwat | 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 |
| 7 | D Brands | 3 | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | U Ignatik | 6 | 6$^2$ | 4 | 7 | D Brands | 6$^8$ | 4 | | | | | | | | | | |
| PR | E Gerasimov | 6 | 7$^7$ | | PR | E Gerasimov | 7$^{10}$ | 6 | | | | | | | | | | |
| LL | R Safiullin | 3 | 6$^4$ | | | | | | | PR | E Gerasimov | 7$^7$ | 3 | 6 | | | | |
| WC | K Sultanov | 6$^2$ | 4 | | | | | | | Q | M Bourgue | 6$^5$ | 6 | 1 | | | | |
| | A Santillan | 7$^7$ | 6 | | | A Santillan | 4 | 1 | | | | | | | | | | |
| Q | M Bourgue | 7 | 6 | | Q | M Bourgue | 6 | 6 | | | | | | | | | | |
| 3 | E López Pérez | 5 | 3 | | | | | | | | | | | | PR | E Gerasimov | 4 | 6$^4$ |
| 5 | A Vatutin | 6 | 6 | | | | | | | | | | | | Q | F Auger-Aliassime | 6 | 7$^7$ |
| Q | F Ferreira Silva | 1 | 2 | | 5 | A Vatutin | 3 | 6 | 6$^7$ | | | | | | | | | |
| | D Petrović | 4 | 5 | | Q | F Auger-Aliassime | 6 | 2 | 7$^9$ | | | | | | | | | |
| Q | F Auger-Aliassime | 6 | 7 | | | | | | | Q | F Auger-Aliassime | 7$^7$ | 6 | | | | | |
| | A Bublik | 3 | 6 | 6 | | | | | | 2 | D Istomin | 6$^4$ | 3 | | | | | |
| | T-h Yang | 6 | 3 | 4 | | A Bublik | 6$^6$ | 1 | | | | | | | | | | |
| | F Gaio | 3 | 4 | | 2 | D Istomin | 7$^8$ | 6 | | | | | | | | | | |
| 2 | D Istomin | 6 | 6 | | | | | | | | | | | | | | | |