Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Hamburg | 2021/10/20 10:50 | Johannes Haerteis v Riccardo Balzerani | 6-3,6-4 |
| ITF M25 Skopje | 2021/10/01 13:30 | Riccardo Balzerani v Henri Squire | 2-6,4-6 |
| ITF M25 Skopje | 2021/10/01 10:05 | Riccardo Balzerani v Stefan Micov | 7-5,6-1 |
| ITF M25 Skopje | 2021/09/29 07:55 | Riccardo Balzerani v Lorenzo Vatteroni | 6-3,6-2 |
| ITF M15 Pirot | 2021/09/22 08:00 | Luigi Sorrentino v Riccardo Balzerani | 6-1,7-5 |
| ITF M15 Ulcinj | 2021/09/08 08:00 | Riccardo Balzerani v Aziz Kijametovic | 5-7,2-6 |
| ITF M15 Allershausen | 2021/08/31 13:15 | Christoph Negritu v Riccardo Balzerani | 6-3,6-2 |
| ITF M25 Lesa | 2021/08/26 13:50 | Federico Arnaboldi v Riccardo Balzerani | 6-3,7-5 |
| ITF M25 Poznan | 2021/08/22 08:00 | Taiyo Yamanaka v Dominique Graf | 7-6,1-6,8-10 |
| ITF M15 Lodz | 2021/08/16 13:15 | Taiyo Yamanaka v Admir Kalender | 3-6,7-6,10-7 |
| ITF M15 Lodz | 2021/08/16 09:30 | Taiyo Yamanaka v Dawid Taczala | 6-4,6-3 |
| ITF M25 Frankfurt am Main | 2021/08/12 11:10 | Taiyo Yamanaka v Mariano Kestelboim | 2-6,2-6 |
| ITF M25 Frankfurt am Main | 2021/08/11 11:15 | Adrian Oetzbach v Taiyo Yamanaka | 5-7,5-7 |
| ITF M25 Frankfurt am Main | 2021/08/10 10:30 | Taiyo Yamanaka v Niklas Schell | 6-1,6-2 |
| ITF M25 Frankfurt am Main | 2021/08/09 14:10 | Milan Welte v Taiyo Yamanaka | 6-7,4-6 |
| ITF M15 Novi Sad | 2021/08/02 11:00 | Ivailo Keremedchiev v Taiyo Yamanaka | 6-2,6-7,10-6 |