| Challenger Ochsenhausen | 2021/10/19 16:40 | 케닌, 알략산드르 v Grela, Artur | L | 3-0 |
| Challenger Ochsenhausen | 2021/01/26 17:55 | Grela, Artur v 왕, 쩡이 | L | 0-3 |
| TT Star Series | 2020/12/08 14:08 | 후스틱, 페트르 v Grela, Artur | L | 3-1 |
| TT Star Series | 2020/12/08 12:15 | Boguslav Koszyk v Grela, Artur | W | 1-3 |
| TT Star Series | 2020/12/08 10:45 | Seibert, Jakub v Grela, Artur | W | 0-3 |
| TT Star Series | 2020/12/08 08:45 | 케이나스, 토마스 v Grela, Artur | W | 0-3 |
| TT Star Series | 2020/12/07 11:45 | 후스틱, 페트르 v Grela, Artur | W | 1-3 |
| TT Star Series | 2020/12/07 10:15 | 반코즈, 미첼 v Grela, Artur | W | 1-3 |