# 2020 Wolffkran Open – Singles

Lukáš Lacko was the defending champion but lost in the second round to Prajnesh Gunneswaran.
Marc-Andrea Hüsler won the title after defeating Botic van de Zandschulp 6–7$^{(3–7)}$, 7–6$^{(7–2)}$, 7–5 in the final.

## Seeds

* Federico Delbonis (first round)
* Yannick Hanfmann (second round)
* Grégoire Barrère (first round)
* Antoine Hoang (semifinals)
* Sebastian Korda (quarterfinals)
* Henri Laaksonen (second round)
* Prajnesh Gunneswaran (semifinals)
* Juan Pablo Varillas (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 | Final | Final | Final | Final |
| | Marc-Andrea Hüsler | 6 | 7$^7$ | | | | |
| 4 | Antoine Hoang | 4 | 6$^4$ | | | | |
| 4 | Antoine Hoang | 4 | 6$^4$ | Marc-Andrea Hüsler | 6$^3$ | 7$^7$ | 7 |
| | | | | Botic van de Zandschulp | 7$^7$ | 6$^2$ | 5 |
| 7 | Prajnesh Gunneswaran | 6$^6$ | 1 | Botic van de Zandschulp | 7$^7$ | 6$^2$ | 5 |
| | Botic van de Zandschulp | 7$^8$ | 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 |
| 1 | F Delbonis | 4 | 7$^7$ | 3 | | | | | | | | | | | | | | |
| | B Schnur | 6 | 6$^2$ | 6 | | B Schnur | 5 | 6 | 3 | | | | | | | | | |
| | M-A Hüsler | 7$^7$ | 4 | 7$^7$ | | M-A Hüsler | 7 | 3 | 6 | | | | | | | | | |
| PR | D Brown | 6$^3$ | 6 | 6$^5$ | | | | | | | M-A Hüsler | 6 | 6 | | | | | |
| Q | J Lenz | 5 | 7 | 6 | | | | | | 5 | S Korda | 4 | 4 | | | | | |
| | JP Ficovich | 7 | 5 | 4 | Q | J Lenz | 6$^4$ | 3 | | | | | | | | | | |
| | Z Kolář | 6 | 3 | 4 | 5 | S Korda | 7$^7$ | 6 | | | | | | | | | | |
| 5 | S Korda | 3 | 6 | 6 | | | | | | | | | | | | M-A Hüsler | 6 | 7$^7$ |
| 4 | A Hoang | 4 | 7 | 6 | | | | | | | | | | | 4 | A Hoang | 4 | 6$^4$ |
| | V Troicki | 6 | 5 | 1 | 4 | A Hoang | 6 | 3 | 6 | | | | | | | | | |
| | B Nakashima | 6 | 3 | 4 | | M Viola | 2 | 6 | 3 | | | | | | | | | |
| | M Viola | 4 | 6 | 6 | | | | | | 4 | A Hoang | 5 | 6 | 6 | | | | |
| WC | M Marterer | 7 | 6 | | | | | | | WC | M Marterer | 7 | 4 | 4 | | | | |
| | M Torpegaard | 5 | 3 | | WC | M Marterer | 7$^8$ | 6 | | | | | | | | | | |
| Q | L Miedler | 4 | 5 | | 6 | H Laaksonen | 6$^6$ | 2 | | | | | | | | | | |
| 6 | H Laaksonen | 6 | 7 | | | | | | | | | | | | | | | |

### 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 | P Gunneswaran | 6 | 3 | 7$^7$ | | | | | | | | | | | | | | |
| Q | TM Etcheverry | 4 | 6 | 6$^3$ | 7 | P Gunneswaran | 6 | 5 | 6 | | | | | | | | | |
| | L Lacko | 5 | 7$^7$ | 6 | | L Lacko | 4 | 7 | 4 | | | | | | | | | |
| WC | MH Rehberg | 7 | 6$^4$ | 1 | | | | | | 7 | P Gunneswaran | 7 | 6$^9$ | 6 | | | | |
| WC | M Rosenkranz | 7 | 7$^7$ | | | | | | | Q | D Masur | 5 | 7$^{11}$ | 3 | | | | |
| | M Cressy | 5 | 6$^3$ | | WC | M Rosenkranz | 4 | 3 | | | | | | | | | | |
| Q | D Masur | 6 | 6 | | Q | D Masur | 6 | 6 | | | | | | | | | | |
| 3 | G Barrère | 3 | 2 | | | | | | | | | | | | 7 | P Gunneswaran | 6$^6$ | 1 |
| 8 | JP Varillas | 0 | 1 | | | | | | | | | | | | | B van de Zandschulp | 7$^8$ | 6 |
| | B van de Zandschulp | 6 | 6 | | | B van de Zandschulp | 6 | 6 | | | | | | | | | | |
| | R Ramanathan | 7$^7$ | 6 | | | R Ramanathan | 2 | 2 | | | | | | | | | | |
| | Q Halys | 6$^5$ | 3 | | | | | | | | B van de Zandschulp | 6 | 3 | 7$^{11}$ | | | | |
| | C Lestienne | 4 | 2 | | | | | | | | T Kamke | 3 | 6 | 6$^9$ | | | | |
| | T Kamke | 6 | 6 | | | T Kamke | 6 | 6 | | | | | | | | | | |
| | Y Maden | 4 | 6 | 5 | 2 | Y Hanfmann | 1 | 4 | | | | | | | | | | |
| 2 | Y Hanfmann | 6 | 3 | 7 | | | | | | | | | | | | | | |