Stadium: Court 10 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Sintra | 2021/09/06 08:30 | Kirill Kivattsev v Tomas Tenil | 6-0,6-0 |
| ITF M25 Bolzano | 2021/08/03 16:15 | Emiliano Maggioli v Kirill Kivattsev | 1-6,6-4,6-4 |
| ITF M15 Esch/Alzette | 2021/07/20 15:50 | Kirill Kivattsev v Mick Veldheer | 4-6,3-6 |
| ITF M25 Telfs | 2021/07/18 13:20 | Filip Misolic v Kirill Kivattsev | 6-2,6-4 |
| ITF M25 Telfs | 2021/07/18 08:00 | Kirill Kivattsev v Alex M Pujolras | 6-3,6-1 |
| ITF M25 Telfs | 2021/07/16 10:00 | Kirill Kivattsev v Ondrej Horak | 6-2,6-2 |
| ITF M25 Telfs | 2021/07/13 09:00 | Danylo Kalenichenko v Kirill Kivattsev | 4-6,3-6 |
| ITF M25 Marburg | 2021/07/05 09:30 | Kirill Kivattsev v Andres Gabriel Ciurletti | 6-7,6-7 |
| ITF M25 Sintra | 2021/09/06 08:30 | Eduardo Morais v Daniel Batista | 5-7,1-6 |
| ITF M15 Monastir | 2021/08/24 07:30 | Kazuki Nishiwaki v Daniel Batista | 6-3,6-4 |
| ITF M15 Monastir | 2021/08/23 08:00 | Matas Vasiliauskas v Daniel Batista | 4-6,1-6 |
| ITF M15 Monastir | 2021/08/22 07:30 | Shohei Chikami v Daniel Batista | 2-6,3-6 |
| ITF M15 Monastir | 2021/08/17 07:30 | Kyle Seelig v Daniel Batista | 6-3,6-2 |
| ITF M15 Monastir | 2021/08/16 08:30 | Credit Chaiyarin v Daniel Batista | 3-6,5-7 |
| ITF M15 Castelo Branco | 2021/07/30 13:55 | Daniel Batista v Clement Chidekh | 1-6,4-6 |
| ITF M15 Castelo Branco | 2021/07/29 13:15 | Marek Gengel v Daniel Batista | 4-6,6-3,3-6 |