| ITF M25 Hammamet | 04/18 08:30 | 26 | [421] Raphael Collignon v Constantin B Kouzmine [483] | 6-2,6-2 | |
| ITF M25 Hammamet | 04/17 08:30 | 25 | [483] Constantin B Kouzmine v Aziz Ouakaa [255] | 6-3,7-5 | |
| ITF M25 Hammamet | 04/10 08:30 | 25 | Constantin B Kouzmine v Pawel Juszczak | 2-6,6-3,3-6 | |
| ITF M25 Hammamet | 04/06 09:00 | 28 | Oleksandr Ovcharenko v Constantin Bittoun Kouzmine | 6-2,6-3 | |
| ITF M25 Hammamet | 04/05 09:00 | 27 | Constantin Bittoun Kouzmine v Noah Perfetti | 6-3,0-6,7-5 | |
| ITF M25 Hammamet | 04/04 09:00 | 26 | Constantin Bittoun Kouzmine v Matteo Fondriest | 6-2,7-6 | |
| ITF M25 Hammamet | 04/03 12:00 | 25 | Constantin Bittoun Kouzmine v Lorenzo Ferri | 6-0,6-4 | |
| ITF M15 Monastir | 03/31 09:00 | 29 | Constantin Bittoun Kouzmine v Alexandre Aubriot | 6-2,6-3 | |
| ITF M15 Monastir | 03/30 11:10 | 28 | Constantin Bittoun Kouzmine v Tauheed Browning | 6-4,6-4 | |
| ITF M15 Monastir | 03/29 12:50 | 27 | Constantin Bittoun Kouzmine v Sven Corbinais | 6-0,6-1 | |
| ITF M15 Monastir | 03/28 10:40 | 26 | Constantin Bittoun Kouzmine v Luca Fantini | Retired | |
| ITF M15 Monastir | 03/27 09:45 | 25 | Constantin Bittoun Kouzmine v Benjamin Gusic Wan | 6-0,6-4 | |
| ITF M15 Monastir | 03/22 11:20 | 27 | Florian Broska v Constantin Bittoun Kouzmine | 6-2,6-4 | |
| ITF M15 Monastir | 03/21 10:35 | 26 | Daniel De Jonge v Constantin Bittoun Kouzmine | 6-7,4-6 | |
| ITF M15 Monastir | 03/20 12:25 | 25 | Marco Furlanetto v Constantin Bittoun Kouzmine | 2-6,1-6 | |
| ITF M15 Monastir | 03/16 08:30 | 28 | [233] Constantin Bittoun Kouzmine v Christoph Negritu [277] | 2-6,6-7 | |
| ITF M15 Monastir | 03/15 08:30 | 27 | Constantin Bittoun Kouzmine v Massimo Giunta | 3-6,6-0,6-2 | |
| ITF M15 Monastir | 03/14 10:45 | 26 | Constantin Bittoun Kouzmine v Niccolo Ciavarella | 6-3,6-0 | |
| ITF M15 Monastir | 03/13 09:00 | 25 | Constantin Bittoun Kouzmine v Maxim Shin | 6-0,7-6 | |
| Challenger New Delhi | 02/25 07:55 | 14 | [308] Samuel Vincent Ruggeri v Constantin Bittoun Kouzmine [306] | 6-2,6-4 | |
| Challenger Bengaluru | 02/11 06:15 | 14 | [296] Constantin Bittoun Kouzmine v Vadym Ursu [436] | 6-4,5-7,4-6 | |
| Challenger Chennai | 02/04 06:10 | 14 | Alexey Zakharov v Constantin Bittoun Kouzmine | 6-0,6-0 | |
| ITF M15 Monastir | 01/18 11:20 | 26 | Constantin B Kouzmine v Louis Tessa | 6-4,3-6,6-7 | |
| ITF M15 Monastir | 01/17 11:05 | 25 | Constantin B Kouzmine v Paul Barbier Gazeu | 6-1,6-3 | |
| ITF M15 Monastir | 01/05 11:15 | 27 | Constantin Bittoun Kouzmine v Tao Mu | 6-7,4-6 | |
| ITF M15 Monastir | 01/04 10:05 | 26 | Constantin Bittoun Kouzmine v Chirag Duhan | 6-3,6-4 | |
| ITF M15 Monastir | 01/03 12:45 | 25 | Constantin Bittoun Kouzmine v Mohamed Amin Oueslati | 6-0,6-1 | |
| ITF M15 Monastir | 12/28 12:10 | 26 | Constantin Bittoun Kouzmine v Igor Kudriashov | 4-6,7-5,2-6 | |
| ITF M15 Monastir | 12/27 10:35 | 25 | Constantin Bittoun Kouzmine v Michalis Sakellaridis | 7-5,6-2 | |
| ITF M15 Monastir | 12/23 08:30 | 27 | Constantin Bittoun Kouzmine v Jelle Sels | 7-6,2-6,4-6 |