Estádio: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/05/06 13:00 | Constantin Bittoun Kouzmine v Yusuke Takahashi | 2-6,1-6 |
| ITF - M15 Monastir | 2021/05/17 12:30 | Taisei Ichikawa v Constantin Bittoun Kouzmine | 7-6,3-6,9-11 |
| ITF - M15 Monastir | 2021/05/17 08:00 | Mehdi Benchakroun v Constantin Bittoun Kouzmine | 0-6,4-6 |
| ITF - M15 Monastir | 2021/05/16 10:00 | Lisandru Rodriguez v Constantin Bittoun Kouzmine | 2-6,0-6 |
| ITF - M15 Monastir | 2021/05/10 08:00 | Dong Ju Kim v Constantin Bittoun Kouzmine | 4-6,6-4,10-5 |
| ITF - M15 Monastir | 2021/05/09 10:00 | Victorio Marquiselli v Constantin Bittoun Kouzmine | 3-6,5-7 |
| ITF - M15 Monastir | 2021/05/06 13:00 | Constantin Bittoun Kouzmine v Yusuke Takahashi | 2-6,1-6 |
| ITF - M15 Monastir | 2021/05/05 10:25 | Constantin Bittoun Kouzmine v Imran Sibille | 6-2,6-1 |
| ITF - M15 Monastir | 2021/05/04 08:00 | Alessandro Pecci v Constantin Bittoun Kouzmine | 5-7,6-7 |
| ITF - M15 Monastir | 2021/05/13 10:30 | Yusuke Takahashi v Omni Kumar | 3-6,6-2,1-6 |
| ITF - M15 Monastir | 2021/05/11 09:50 | Yusuke Takahashi v Mehdi Benchakroun | 6-4,6-3 |
| ITF - M15 Monastir | 2021/05/07 08:30 | Mohamed Aziz Dougaz v Yusuke Takahashi | 6-3,6-4 |
| ITF - M15 Monastir | 2021/05/06 13:00 | Constantin Bittoun Kouzmine v Yusuke Takahashi | 2-6,1-6 |
| ITF - M15 Monastir | 2021/05/04 10:30 | Robert Strombachs v Yusuke Takahashi | 3-6,6-3,1-6 |
| Challenger Salinas 2 | 2021/04/26 18:00 | Nicolas Alvarez v Yusuke Takahashi | 7-6,6-0 |
| Challenger - Salinas | 2021/04/19 14:30 | Facundo Diaz Acosta v Yusuke Takahashi | 6-2,6-2 |
| Challenger - Salinas | 2021/04/18 16:55 | Gage Brymer v Yusuke Takahashi | 4-6,4-6 |