Stadium: Court 3 Round: 62 Ground: Clay
| ITF M15 Genova | 2021/06/14 07:00 | Wishaya Trongcharoenchaikul v Mirko Martinez | 4-6,3-6 |
| ITF M15 Heraklion | 2021/06/08 10:45 | Wishaya Trongcharoenchaikul v Yuki Mochizuki | 3-6,4-6 |
| ITF M15 Heraklion | 2021/06/02 13:15 | Wishaya Trongcharoenchaikul v Roman Andres Burruchaga | 7-6,0-6,3-6 |
| ITF M15 Heraklion | 2021/05/27 08:00 | Yshai Oliel v Wishaya Trongcharoenchaikul | 6-4,6-4 |
| ITF M15 Heraklion | 2021/05/26 06:15 | Rishab Agarwal v Wishaya Trongcharoenchaikul | 4-6,6-7 |
| ITF M15 Heraklion | 2021/05/19 11:00 | Wishaya Trongcharoenchaikul v Joao Victor C Loureiro | 3-6,6-3,6-7 |
| ITF M15 Doha | 2020/03/12 12:00 | Adrian Obert v Wishaya Trongcharoenchaikul | 6-3,7-6 |
| ITF M15 Doha | 2020/03/11 12:00 | Aliaksandr Liaonenka v Wishaya Trongcharoenchaikul | 5-7,4-6 |
| ITF M15 Gaiba | 2021/06/09 12:50 | Benjamin Lock v Luigi Castelletti | 6-1,6-3 |
| ITF M15 Bucharest | 2021/05/23 15:00 | Simon Beaupain v Luigi Castelletti | 6-1,6-2 |
| ITF M15 Sibenik | 2021/05/16 07:30 | Adan Freire Da Silva v Luigi Castelletti | 4-6,6-4,10-3 |
| ITF M15 Valldoreix | 2021/05/09 12:00 | Nicolas Alvarez Varona v Luigi Castelletti | 6-2,7-6 |
| ITF M15 Sibenik | 2021/04/20 08:00 | Peter Goldsteiner v Luigi Castelletti | 7-5,1-6,12-10 |
| ITF M15 Sibenik | 2021/04/19 13:50 | Matthias Uwe Kask v Luigi Castelletti | 5-7,6-2,15-17 |
| ITF M15 Monastir | 2021/04/11 08:00 | Luigi Castelletti v Louis Allen | 4-6,6-2,3-10 |
| ITF M15 Monastir | 2021/04/04 09:00 | Luigi Castelletti v Michal Mikula | 3-6,6-7 |