Stadium: La Foret 1 Round: 14 Ground: Hardcourt indoor
| Challenger Luedenscheid | 2021/08/17 14:45 | Mischa Zverev v Julien Cagnina | 3-6,1-6 |
| Challenger Prague | 2021/08/09 15:30 | Riccardo Bonadio v Mischa Zverev | 6-3,2-6,6-3 |
| Challenger Braunschweig | 2021/07/06 15:25 | Nicola Kuhn v Mischa Zverev | 6-2,7-6 |
| Challenger Biella | 2021/05/17 08:00 | Mischa Zverev v Omar Giacalone | 6-7,2-6 |
| Challenger Biella | 2021/05/16 09:00 | Mischa Zverev v Geoffrey Blancaneaux | 6-2,6-0 |
| ITF M25 Prague | 2021/05/12 07:30 | Mischa Zverev v Peter Goldsteiner | 7-6,5-7,6-1 |
| ATP Munich | 2021/04/24 11:00 | Mischa Zverev v Daniel Elahi Galan | 3-6,3-6 |
| ATP Monte Carlo | 2021/04/10 10:20 | Mischa Zverev v Juan Ignacio Londero | 4-6,1-6 |
| Challenger Rennes | 2021/09/13 18:20 | Richard Gasquet v Kyrian Jacquet | 7-6,6-3 |
| Challenger St. Tropez | 2021/09/02 14:00 | Benjamin Bonzi v Kyrian Jacquet | 7-5,6-3 |
| Challenger St. Tropez | 2021/08/30 15:10 | Kyrian Jacquet v Denis Istomin | 6-4,3-6,6-1 |
| Challenger Prague | 2021/08/08 09:30 | Kyrian Jacquet v Danylo Kalenichenko | 6-7,4-6 |
| Challenger Liberec | 2021/08/01 15:10 | Artem Dubrivnyy v Kyrian Jacquet | 6-4,6-0 |
| Challenger Tampere | 2021/07/24 10:20 | Jiri Lehecka v Kyrian Jacquet | 6-3,6-0 |
| Challenger Tampere | 2021/07/23 11:00 | Kyrian Jacquet v Geoffrey Blancaneaux | 6-3,6-3 |
| Challenger Tampere | 2021/07/21 09:00 | Dimitar Kuzmanov v Kyrian Jacquet | 6-3,4-6,6-7 |