# 2020 I.ČLTK Prague Open – Singles

Mario Vilella Martínez was the defending champion but chose not to compete this year.
Stan Wawrinka won the title after defeating Aslan Karatsev 7–6$^{(7–2)}$, 6–4 in the final.

## Seeds

All seeds receive a bye into the second round.
* Stan Wawrinka (champion)
* Jiří Veselý (second round)
* Pierre-Hugues Herbert (semifinals)
* Philipp Kohlschreiber (third round, withdrew)
* Jozef Kovalík (third round)
* Sumit Nagal (quarterfinals)
* Henri Laaksonen (quarterfinals)
* Ilya Ivashka (second round)
* Blaž Rola (second round)
* Yannick Maden (third round)
* Kimmer Coppejans (second round)
* Martin Kližan (second round)
* Arthur Rinderknech (second round)
* Ernests Gulbis (third round)
* Sebastian Ofner (second round)
* Steven Diez (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1/WC | Stan Wawrinka | 2 | 6 | 6 | | | | | | | | | |
| 6 | Sumit Nagal | 6 | 0 | 1 | | | | | | | | | |
| 6 | Sumit Nagal | 6 | 0 | 1 | 1/WC | Stan Wawrinka | 5 | 6 | 6 | | | | |
| | | | | | WC | Michael Vrbenský | 7 | 3 | 3 | | | | |
| WC | Michael Vrbenský | 6 | 3 | 6 | WC | Michael Vrbenský | 7 | 3 | 3 | | | | |
| | Elias Ymer | 2 | 6 | 4 | | | | | | | | | |
| | Elias Ymer | 2 | 6 | 4 | | | | | | 1/WC | Stan Wawrinka | 7$^7$ | 6 |
| | | | | | | | | | | | Aslan Karatsev | 6$^2$ | 4 |
| | Tallon Griekspoor | 5 | 7 | 3 | | | | | | | | | | Aslan Karatsev | 6$^2$ | 4 |
| 3 | Pierre-Hugues Herbert | 7 | 5 | 6 | | | | | | | | | |
| 3 | Pierre-Hugues Herbert | 7 | 5 | 6 | 3 | Pierre-Hugues Herbert | 5 | 6$^7$ | | | | | |
| | | | | | | Aslan Karatsev | 7 | 7$^9$ | | | | | |
| 7 | Henri Laaksonen | 6$^3$ | 4 | | | Aslan Karatsev | 7 | 7$^9$ | | | | | |
| | Aslan Karatsev | 7$^7$ | 6 | | | | | | | | | | |

### Top half
#### Section 1

| 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1/WC | S Wawrinka | 6 | 4 | 6 | | | | | | | | | | |
| | R Safiullin | 7 | 6 | | | R Safiullin | 1 | 6 | 1 | | | | | | | | | | |
| | L Rosol | 5 | 2 | | | | | | | 1/WC | S Wawrinka | 3 | 7 | 6 | | | | | |
| | M Jaziri | 4 | 0 | | | | | | | | O Otte | 6 | 5 | 1 | | | | | |
| | O Otte | 6 | 6 | | | O Otte | 6 | 6 | | | | | | | | | | | |
| | | | | | 13 | A Rinderknech | 2 | 3 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 1/WC | S Wawrinka | 2 | 6 | 6 |
| | | | | | | | | | | | | | | | 6 | S Nagal | 6 | 0 | 1 |
| | | | | | 9 | B Rola | 4 | 6$^4$ | | | | | | | | | | | |
| | N Kuhn | 3 | 3 | | WC | J Lehečka | 6 | 7$^7$ | | | | | | | | | | | |
| WC | J Lehečka | 6 | 6 | | | | | | | WC | J Lehečka | 7 | 6$^4$ | 3 | | | | | |
| | D Popko | 6$^3$ | 6 | 3 | | | | | | 6 | S Nagal | 5 | 7$^7$ | 6 | | | | | |
| | J Clarke | 7$^7$ | 3 | 6 | | J Clarke | 3 | 7 | 1$^r$ | | | | | | | | | | |
| | | | | | 6 | S Nagal | 6 | 5 | 4 | | | | | | | | | | |

#### Section 2

| 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | P Kohlschreiber | 6 | 7$^7$ | | | | | | | | | | | |
| | A Vatutin | 7 | 3 | 2 | | M Moraing | 1 | 6$^3$ | | | | | | | | | | | |
| | M Moraing | 5 | 6 | 6 | | | | | | 4 | P Kohlschreiber | | | | | | | | |
| WC | M Vrbenský | 7 | 7 | | | | | | | WC | M Vrbenský | w/o | | | | | | | |
| | D Masur | 5 | 5 | | WC | M Vrbenský | 7 | 6 | | | | | | | | | | | |
| | | | | | 16 | S Diez | 5 | 3 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | WC | M Vrbenský | 6 | 3 | 6 |
| | | | | | | | | | | | | | | | | E Ymer | 2 | 6 | 4 |
| | | | | | 12 | M Kližan | 2 | 6 | 2 | | | | | | | | | | |
| | E Ymer | 6 | 6 | | | E Ymer | 6 | 2 | 6 | | | | | | | | | | |
| | E Karlovskiy | 3 | 4 | | | | | | | | E Ymer | 4 | 6 | 6 | | | | | |
| | S Stakhovsky | 5 | 2 | | | | | | | | T Macháč | 6 | 3 | 0 | | | | | |
| | T Macháč | 7 | 6 | | | T Macháč | 6 | 7 | | | | | | | | | | | |
| | | | | | 8 | I Ivashka | 0 | 5 | | | | | | | | | | | |

### 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | J Kovalík | 4 | 6 | 6 | | | | | | | | | | |
| | A Menéndez Maceiras | 7$^7$ | 6 | | | A Menéndez Maceiras | 6 | 1 | 2 | | | | | | | | | | |
| | R Molleker | 6$^4$ | 3 | | | | | | | 5 | J Kovalík | 1 | 6 | 1 | | | | | |
| PR | A Kuznetsov | 6$^4$ | 6$^5$ | | | | | | | | T Griekspoor | 6 | 1 | 6 | | | | | |
| | T Griekspoor | 7$^7$ | 7$^7$ | | | T Griekspoor | 5 | 6 | 6 | | | | | | | | | | |
| | | | | | 11 | K Coppejans | 7 | 4 | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | T Griekspoor | 5 | 7 | 3 |
| | | | | | | | | | | | | | | | 3 | P-H Herbert | 7 | 5 | 6 |
| | | | | | 15 | S Ofner | 6$^7$ | 5 | | | | | | | | | | | |
| | Z Kolář | 6 | 6 | | | Z Kolář | 7$^9$ | 7 | | | | | | | | | | | |
| Q | P Nouza | 2 | 1 | | | | | | | | Z Kolář | 6$^3$ | 6 | 3 | | | | | |
| | B van de Zandschulp | 4 | 6 | 4 | | | | | | 3 | P-H Herbert | 7$^7$ | 2 | 6 | | | | | |
| WC | J Forejtek | 6 | 2 | 6 | WC | J Forejtek | 6 | 4 | 3 | | | | | | | | | | |
| | | | | | 3 | P-H Herbert | 2 | 6 | 6 | | | | | | | | | | |

#### Section 4

| 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 | Quarterfinals | Quarterfinals |
| | | | | | 7 | H Laaksonen | 6 | 3 | 7 | | | | | | | | | |
| Q | J Šátral | 7 | 7 | | Q | J Šátral | 3 | 6 | 5 | | | | | | | | | |
| | R Bemelmans | 5 | 5 | | | | | | | 7 | H Laaksonen | 3 | 6 | 6 | | | | |
| PR | A De Greef | 6 | 6 | | | | | | | 10 | Y Maden | 6 | 4 | 3 | | | | |
| | E Couacaud | 2 | 0 | | PR | A De Greef | 3 | 4 | | | | | | | | | | |
| | | | | | 10 | Y Maden | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 7 | H Laaksonen | 6$^3$ | 4 |
| | | | | | | | | | | | | | | | | A Karatsev | 7$^7$ | 6 |
| | | | | | 14 | E Gulbis | 7 | 5 | 6 | | | | | | | | | |
| WC | A Paulson | 6 | 2 | 6 | WC | A Paulson | 5 | 7 | 4 | | | | | | | | | |
| | F Horanský | 3 | 6 | 3 | | | | | | 14 | E Gulbis | 3 | 3 | | | | | |
| | R Haase | 4 | 2 | | | | | | | | A Karatsev | 6 | 6 | | | | | |
| | A Karatsev | 6 | 6 | | | A Karatsev | 6 | 6 | | | | | | | | | | |
| | | | | | 2 | J Veselý | 3 | 4 | | | | | | | | | | |