| Czech TT Star Series | 2020/10/02 11:45 | Miroslav Horejsi v Pawel Grela | L | 3-0 |
| Czech TT Star Series | 2020/10/02 09:45 | Pawel Grela v David Reitspies | L | 0-3 |
| Czech TT Star Series | 2020/10/02 07:10 | Tomas Konecny v Pawel Grela | L | 3-1 |
| Czech TT Star Series | 2020/10/01 13:45 | Josip Huzjak v Pawel Grela | L | 3-1 |
| Czech TT Star Series | 2020/10/01 11:15 | Peng Gao v Pawel Grela | L | 3-1 |
| Czech TT Star Series | 2020/10/01 08:45 | Miroslav Sklensky v Pawel Grela | L | 3-0 |
| Czech TT Star Series | 2020/10/01 06:35 | Daniel Michael v Pawel Grela | W | 0-3 |
| Czech TT Star Series | 2020/09/11 11:15 | Pawel Grela v Andrey Bukin | L | 0-3 |
| Challenger - Ochsenhausen | 2020/09/20 15:04 | Adam Dosz v Artur Grela | L | 3-0 |
| Challenger - Ochsenhausen | 2020/09/13 17:05 | Artur Grela v Tomasz Lewandowski | L | 1-3 |
| Open dell'Oman U21 femminile | 2020/03/12 19:05 | Maciej Kubik v Artur Grela | W | 2-3 |
| Open dell'Oman U21 femminile | 2020/03/12 15:40 | Radek Skala v Artur Grela | W | 1-3 |
| Open di Polonia | 2020/03/12 12:30 | Miikka O'Connor v Artur Grela | W | 0-3 |
| Challenger - Ochsenhausen | 2020/03/09 17:33 | Artur Grela v Panagiotis Gionis | L | 1-3 |
| Open dell'Oman U21 femminile | 2020/03/05 15:20 | Fanbo Meng v Artur Grela | L | 4-1 |
| Open dell'Oman U21 femminile | 2020/03/04 17:10 | Aleksa Gacev v Artur Grela | W | 2-4 |