Stadium: Court 9 Round: 62 Ground: Clay
| ITF M25 Wroclaw | 2021/06/28 09:40 | Taiyo Yamanaka v Petr Michnev | 5-7,2-6 |
| ITF M25 Wroclaw | 2021/06/27 12:30 | Juliusz Bienkiewicz v Taiyo Yamanaka | 3-6,1-6 |
| ITF M15 Skopje | 2021/06/08 09:00 | Max Houkes v Taiyo Yamanaka | 6-4,6-3 |
| ITF M15 Skopje | 2021/06/07 11:30 | Fons Van Sambeek v Taiyo Yamanaka | 6-2,2-6,6-10 |
| ITF M15 Skopje | 2021/06/06 13:30 | Dmitrii Vasilev v Taiyo Yamanaka | 3-6,6-7 |
| ITF M15 Skopje | 2021/06/01 09:30 | Stefano Battaglino v Taiyo Yamanaka | 3-6,6-1,10-7 |
| ITF M15 Skopje | 2021/05/31 11:00 | Besir Durguti v Taiyo Yamanaka | 2-6,2-6 |
| ITF M15 Skopje | 2021/05/30 08:00 | Dax Donders v Taiyo Yamanaka | 4-6,4-6 |
| ITF M25 Poznan | 2020/08/23 09:30 | Dawid Taczala v Adrian Oetzbach | 3-6,2-6 |