# 2020 Nur-Sultan Challenger – Singles

Illya Marchenko was the defending champion. The tournament was canceled prior to completion due to the coronavirus pandemic.

## Seeds

All seeds receive a bye into the second round.
* Mohamed Safwat (third round)
* Yannick Maden (second round, withdrew)
* Kimmer Coppejans
* Jurij Rodionov (third round)
* Robin Haase (second round)
* Mikael Torpegaard (third round, withdrew)
* Dmitry Popko (second round)
* Botic van de Zandschulp (third round)
* Enzo Couacaud (second round, withdrew)
* Ramkumar Ramanathan (second round)
* Roman Safiullin
* Frederico Ferreira Silva (second round, retired)
* Tallon Griekspoor
* Elias Ymer (third round)
* Illya Marchenko
* Bernabé Zapata Miralles

## 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

| Quarterfinals | Quarterfinals |
| 13 | Tallon Griekspoor |
| | Pavel Kotov |
| 16 | Bernabé Zapata Miralles |
| | Aslan Karatsev |
| 11 | Roman Safiullin |
| 3 | Kimmer Coppejans |
| | Jesper de Jong |
| 15 | Illya Marchenko |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals |
| | | | | | 1 | M Safwat | 6 | 6 | | | | | | |
| | G Lomakin | 5 | 6 | 6 | | G Lomakin | 2 | 4 | | | | | | |
| | Sagadat Ayap | 7 | 1 | 2 | | | | | 1 | M Safwat | 1 | 6$^8$ | | |
| | N Serdarušić | 6 | 6 | | | | | | 13 | T Griekspoor | 6 | 7$^{10}$ | | |
| Alt | Aliaksandr Bulitski | 2 | 2 | | | N Serdarušić | 3 | 6$^5$ | | | | | | |
| | | | | | 13 | T Griekspoor | 6 | 7$^7$ | | | | | | |
| | | | | | | | | | | | | | 13 | T Griekspoor |
| | | | | | | | | | | | | | | P Kotov |
| | | | | | 9 | E Couacaud | | | | | | | | |
| | M Vrbenský | 3 | 3 | | | M Moraing | w/o | | | | | | | |
| | M Moraing | 6 | 6 | | | | | | | M Moraing | | | | |
| WC | Dostanbek Tashbulatov | 4 | 2 | | | | | | | P Kotov | w/o | | | |
| | P Kotov | 6 | 6 | | | P Kotov | 6 | 7$^7$ | | | | | | |
| | | | | | 7 | D Popko | 3 | 6$^4$ | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals |
| | | | | | 4 | J Rodionov | 6 | 7$^7$ | | | | | | |
| WC | Bekzat Usipbekov | 1 | 0 | | | T Kamke | 3 | 6$^3$ | | | | | | |
| | T Kamke | 6 | 6 | | | | | | 4 | J Rodionov | 2 | 2 | | |
| | A Golubev | 6$^3$ | 4 | | | | | | 16 | B Zapata Miralles | 6 | 6 | | |
| | V Durasovic | 7$^7$ | 6 | | | V Durasovic | 1 | 4 | | | | | | |
| | | | | | 16 | B Zapata Miralles | 6 | 6 | | | | | | |
| | | | | | | | | | | | | | 16 | B Zapata Miralles |
| | | | | | | | | | | | | | | A Karatsev |
| | | | | | 12 | F Ferreira Silva | 0$^r$ | | | | | | | |
| | A De Greef | 6 | 2 | 6 | | A De Greef | 4 | | | | | | | |
| | A Molčan | 2 | 6 | 2 | | | | | | A De Greef | 1 | 0$^r$ | | |
| | T Macháč | 7$^7$ | 4 | 3 | | | | | | A Karatsev | 6 | 2 | | |
| | A Karatsev | 6$^2$ | 6 | 6 | | A Karatsev | 7$^7$ | 6 | | | | | | |
| | | | | | 5 | R Haase | 6$^5$ | 1 | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals |
| | | | | | 8 | B van de Zandschulp | 6 | 7 | | | | | | | | |
| WC | T Khabibulin | 6 | 6$^3$ | 3 | Alt | S Freund | 2 | 5 | | | | | | | | |
| Alt | S Freund | 3 | 7$^7$ | 6 | | | | | | 8 | B van de Zandschulp | 3 | 6 | 0 | | |
| | A Nedovyesov | 6 | 6 | | | | | | | 11 | R Safiullin | 6 | 4 | 6 | | |
| WC | Timur Maulenov | 2 | 2 | | | A Nedovyesov | | | | | | | | | | |
| | | | | | 11 | R Safiullin | w/o | | | | | | | | | |
| | | | | | | | | | | | | | | | 11 | R Safiullin |
| | | | | | | | | | | | | | | | 3 | K Coppejans |
| | | | | | 14 | E Ymer | 6 | 7$^9$ | | | | | | | | |
| Alt | M Elgin | 3 | 1 | | Alt | S Walków | 1 | 6$^7$ | | | | | | | | |
| Alt | S Walków | 6 | 6 | | | | | | | 14 | E Ymer | 6$^4$ | 6 | 2 | | |
| Alt | Rostislav Galfinger | 0 | 1 | | | | | | | 3 | K Coppejans | 7$^7$ | 1 | 6 | | |
| | L Klein | 6 | 6 | | | L Klein | 6 | 4 | 1 | | | | | | | |
| | | | | | 3 | K Coppejans | 3 | 6 | 6 | | | | | | | |

#### Section 4

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals |
| | | | | 6 | M Torpegaard | 6 | 7$^9$ | | | | | | |
| | K Kravchuk | 4 | 4 | | D Yevseyev | 1 | 6$^7$ | | | | | | |
| | D Yevseyev | 6 | 6 | | | | | 6 | M Torpegaard | | | | |
| | J de Jong | 6 | 6 | | | | | | J de Jong | w/o | | | |
| Alt | Anatoliy Petrenko | 0 | 2 | | J de Jong | 6 | 6 | | | | | | |
| | | | | 10 | R Ramanathan | 2 | 2 | | | | | | |
| | | | | | | | | | | | | | J de Jong |
| | | | | | | | | | | | | 15 | I Marchenko |
| | | | | 15 | I Marchenko | 6 | 6 | | | | | | |
| | S Fayziev | 6 | 7$^8$ | | S Fayziev | 1 | 4 | | | | | | |
| Alt | N Zimonjić | 1 | 6$^6$ | | | | | 15 | I Marchenko | 7 | 7$^7$ | | |
| | A Zakharov | 6 | 6 | | | | | | A Zakharov | 5 | 6$^2$ | | |
| WC | Danil Ozernoy | 2 | 2 | | A Zakharov | w/o | | | | | | | |
| | | | | 2 | Y Maden | | | | | | | | |