Stadium: Center Court Round: 25 Ground: Carpet indoor
| Challenger Ismaning | 2021/10/28 13:35 | Bemelmans, Ruben v Quentin Halys | 6-7,7-6,4-6 |
| Challenger Ismaning | 2021/10/27 12:20 | Henri Squire v Bemelmans, Ruben | 3-6,4-6 |
| Mouilleron-Le-Captif, France | 2021/10/04 16:00 | Bemelmans, Ruben v Constant Lestienne | 3-6,6-3,5-7 |
| Orleans, France | 2021/10/01 11:55 | Dennis Novak v Bemelmans, Ruben | 7-6,7-6 |
| Orleans, France | 2021/09/30 11:35 | Bemelmans, Ruben v Pierre-Hugues Herbert | 3-6,7-5,6-4 |
| Orleans, France | 2021/09/28 08:30 | Joao Sousa v Bemelmans, Ruben | 4-6,6-4,4-6 |
| Challenger Biel | 2021/09/22 10:45 | Bemelmans, Ruben v Marc-Andrea Huesler | 3-6,6-3,6-7 |
| Coupe Davis | 2021/09/19 19:45 | Murkel Dellien v Bemelmans, Ruben | 6-7,2-6 |
| Challenger Eckental | 2021/11/01 11:55 | Simon, Tobias v Peter Heller | 6-2,6-4 |
| Challenger Eckental | 2021/10/31 11:55 | Otto Virtanen v Simon, Tobias | 1-6,4-6 |
| ITF M25 Sarreguemines | 2021/10/26 11:55 | Arthur Bouquier v Simon, Tobias | 7-5,6-4 |
| ITF - M25 Toulouse | 2021/10/21 09:00 | Axel Garcian v Simon, Tobias | 3-6,6-2,6-1 |
| ITF - M25 Toulouse | 2021/10/19 13:55 | Dane Sweeny v Simon, Tobias | 6-7,5-7 |
| ITF M25 Prague | 2021/10/09 08:30 | Simon, Tobias v David Poljak | 6-7,4-6 |
| ITF M25 Prague | 2021/10/08 11:10 | Simon, Tobias v Ignatik, Uladzimir | 2-6,7-6,6-4 |
| ITF M25 Prague | 2021/10/07 14:05 | Simon, Tobias v Milos Karol | 6-4,4-6,7-6 |