Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Idanha-A-Nova | 2021/07/14 14:15 | Kaichi Uchida v Rodrigues, Daniel | 6-3,6-7,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/13 10:25 | Rodrigues, Daniel v Stoliar, Illia | 2-6,6-4,11-9 |
| ITF M25 Idanha-A-Nova | 2021/07/12 17:40 | Rodrigues, Daniel v Graca, Joao | 6-1,7-6 |
| ITF M25 Idanha-A-Nova | 2021/07/12 15:30 | Rodrigues, Daniel v Graca, Joao | 0-0 |
| ITF M25 Idanha-A-Nova | 2021/07/12 08:00 | Rodrigues, Daniel v Sousa Severin, Guilherme | 4-6,6-2,11-9 |
| Challenger Porto | 2021/06/28 10:00 | Geoffrey Blancaneaux v Rodrigues, Daniel | 6-7,7-5,6-3 |
| ITF - M15 Monastir | 2021/06/13 10:00 | Rodrigues, Daniel v Giacomo Revelli | 6-0,4-6,10-7 |
| Fayetteville, AR, Singles Qualifying, M-ITF-USA-31 | 2020/11/03 16:00 | Rodrigues, Daniel v Charles Broom | 4-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/14 09:25 | Coelho, Fabio v Naoki Tajima | 6-4,4-6,2-6 |
| ITF M15 Almada | 2021/07/07 10:30 | Naoki Tajima v Leote Prata, Martim | 3-6,2-6 |
| ITF M15 Kouvola | 2021/05/30 08:00 | Anton Matusevich v Naoki Tajima | 6-1,4-6,6-0 |
| ITF M15 Kouvola | 2021/05/29 07:00 | Naoki Tajima v Lorenzo Rottoli | 7-5,6-4 |
| ITF M15 Kouvola | 2021/05/28 07:15 | Luca Castelnuovo v Naoki Tajima | 3-6,2-6 |
| ITF M15 Kouvola | 2021/05/27 08:30 | Lofman, Aleksi v Naoki Tajima | 6-3,6-7,4-6 |
| ITF M15 Kouvola | 2021/05/26 08:55 | Saatela, Leevi v Naoki Tajima | 4-6,2-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/05/20 10:45 | Naoki Tajima v Dan Added | 1-6,4-6 |