Stadium: Court 3 Round: 44 Ground: Clay
| Challenger Barletta | 2021/08/24 09:00 | Pedro Sakamoto v Nicolas Mejia | 6-7,6-7 |
| ITF M25 Bacau | 2021/08/17 11:15 | Pedro Sakamoto v Oleg Prihodko | 6-3,6-1 |
| ITF M25 Frankfurt am Main | 2021/08/12 09:00 | Daniel Cukierman v Pedro Sakamoto | 6-3,1-6,6-1 |
| ITF M25 Frankfurt am Main | 2021/08/10 12:20 | Philip Florig v Pedro Sakamoto | 4-6,1-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/05 14:25 | Pedro Sakamoto v Illya Beloborodko | 4-6,4-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/05 07:00 | Pedro Sakamoto v Giacomo Revelli | 5-7,6-2,6-3 |
| Challenger Trieste | 2021/07/27 16:00 | Giulio Zeppieri v Pedro Sakamoto | 3-6,6-3,6-3 |
| Challenger Trieste | 2021/07/26 13:30 | Pedro Sakamoto v Hernan Casanova | 6-4,7-6 |
| ITF M15 Ibague | 2021/09/05 15:00 | Joao Eduardo Schiessl v Juan Sebastian Osorio | 4-6,6-2,4-10 |