Stadium: Court 1 Round: 14 Ground: Grass
| Wimbledon | 2021/06/22 10:00 | Lukas Lacko v Nikola Milojevic | 4-6,4-6 |
| ATP Halle | 2021/06/17 12:00 | Lloyd Harris v Lukas Lacko | 6-3,7-6 |
| ATP Halle | 2021/06/15 09:00 | Guido Pella v Lukas Lacko | 7-6,5-7,1-6 |
| ATP Halle | 2021/06/13 10:40 | Lukas Lacko v Joao Sousa | 4-6,6-4,6-3 |
| ATP Halle | 2021/06/12 14:35 | Egor Gerasimov v Lukas Lacko | 4-6,5-7 |
| Challenger Biella | 2021/05/31 13:05 | Lukas Lacko v Nikola Milojevic | 2-6,3-6 |
| French Open | 2021/05/25 15:20 | Carlos Alcaraz Garfia v Lukas Lacko | 6-3,6-3 |
| Challenger Prague | 2021/05/02 12:00 | Tomas Martin Etcheverry v Lukas Lacko | 6-1,6-3 |
| Wimbledon | 2021/06/23 12:55 | Brayden Schnur v Tomas Machac | 6-7,0-6 |
| Wimbledon | 2021/06/22 14:45 | Steven Diez v Brayden Schnur | 3-6,6-2,3-6 |
| Challenger Almaty | 2021/06/17 05:30 | Andrej Martin v Brayden Schnur | 7-6,7-5 |
| Challenger Almaty | 2021/06/16 04:00 | Carlos Gimeno Valero v Brayden Schnur | 4-6,6-7 |
| Challenger Almaty | 2021/06/14 08:10 | Adrian Menendez-Maceiras v Brayden Schnur | 5-7,3-6 |
| Challenger Almaty | 2021/06/10 04:00 | Andrej Martin v Brayden Schnur | 6-2,6-2 |
| Challenger Almaty | 2021/06/08 04:00 | Brayden Schnur v Tung-Lin Wu | 6-4,6-4 |
| French Open | 2021/05/24 16:05 | Brayden Schnur v Illya Marchenko | 7-6,5-7,4-6 |