Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/10/18 09:30 | Natthasith Kunsuwan v Josh Reid | 7-5,6-1 |
| ITF M15 Monastir | 2021/10/04 13:00 | Thanapet Chanta v Natthasith Kunsuwan | 6-2,6-4 |
| ITF M15 Monastir | 2021/10/04 09:00 | Aaditya Tewari v Natthasith Kunsuwan | 0-6,2-6 |
| ITF M15 Monastir | 2021/09/27 08:00 | Geni Inoue v Natthasith Kunsuwan | 6-2,6-0 |
| ITF M15 Monastir | 2021/09/21 08:00 | Daisuke Sumizawa v Natthasith Kunsuwan | 6-2,3-6,7-10 |
| ITF M15 Monastir | 2021/09/14 08:00 | Paras Dahiya v Natthasith Kunsuwan | 7-5,6-2 |
| ITF M15 Monastir | 2021/09/13 08:00 | Andres Haefele v Natthasith Kunsuwan | 1-6,4-6 |
| ITF M15 Doha | 2020/03/11 13:55 | Daniil Glinka v Natthasith Kunsuwan | 6-4,5-7,6-4 |
| ITF M15 Monastir | 2021/10/18 09:30 | Stefano D'Agostino v Jasza Szajrych | 3-6,6-1,10-5 |
| ITF M15 Monastir | 2021/10/17 09:00 | Stefano D'Agostino v Mateo Berta | 6-1,6-0 |
| ITF M25 Bolzano | 2021/08/02 12:20 | Stefano D'Agostino v Giorgio Tabacco | 3-6,0-6 |
| ITF M15 Perugia | 2021/07/19 16:30 | Niccolo Catini v Stefano D'Agostino | 6-4,6-7,12-10 |
| ITF M15 Perugia | 2021/07/18 14:30 | Stefano D'Agostino v Rishab Agarwal | 7-6,6-1 |
| ITF M15 Antalya | 2021/05/31 10:30 | Buvaysar Gadamauri v Stefano D'Agostino | 6-4,7-5 |
| ITF M15 Antalya | 2021/05/24 07:30 | Stefano D'Agostino v Giorgio Tabacco | 5-7,6-7 |
| ITF M15 Antalya | 2021/05/23 07:00 | Niklas Schell v Stefano D'Agostino | 4-6,6-3,7-10 |