Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/10/18 14:00 | Natthasith Kunsuwan v Stefano D'Agostino | 6-7,3-6 |
| 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 Monastir | 2021/10/05 08:25 | Sascha Gueymard Wayenburg v Pierre Yves Bailly | 2-6,1-6 |
| ITF M15 Forbach | 2021/09/28 15:00 | Sascha Gueymard Wayenburg v Dan Added | 2-6,1-6 |
| ITF M15 Monastir | 2021/08/19 07:30 | Jeremy Beale v Sascha Gueymard Wayenburg | 6-3,6-4 |
| ITF M15 Monastir | 2021/08/18 10:25 | Sascha Gueymard Wayenburg v Makoto Ochi | 6-3,6-2 |
| ITF M15 Monastir | 2021/07/30 07:30 | Luca Potenza v Sascha Gueymard Wayenburg | 4-6,6-4,7-6 |
| ITF M15 Monastir | 2021/07/29 09:55 | Sascha Gueymard Wayenburg v Imran Sibille | 6-3,6-3 |
| ITF M15 Monastir | 2021/07/27 08:00 | Sascha Gueymard Wayenburg v Adil Kalyanpur | 6-1,4-6,7-6 |
| ITF M15 Monastir | 2021/07/22 08:30 | Erik Crepaldi v Sascha Gueymard Wayenburg | 6-4,5-7,7-6 |