Stadium: Court 4 Round: 25 Ground: Clay
| Challenger Santiago 2 Qual | 2017/11/12 16:15 | Alejandro Gonzalez v Pedro Sakamoto | 2-6,7-5,4-6 |
| Challenger Pozoblanco | 2021/07/18 16:35 | Inaki Montes-De La Torre v Alejandro Gonzalez | 5-7,6-4,6-3 |
| Challenger Iasi | 2021/07/12 09:50 | Miljan Zekic v Alejandro Gonzalez | 6-2,7-6 |
| Challenger Iasi | 2021/07/11 08:20 | Matei Cristian Onofrei v Alejandro Gonzalez | 0-6,1-6 |
| ITF M25 Marburg | 2021/07/07 11:50 | Marvin Netuschil v Alejandro Gonzalez | 6-7,6-4,6-1 |
| ITF M25 Santo Domingo | 2021/06/03 13:00 | Alejandro Gonzalez v Blaise Bicknell | 6-3,6-7,7-5 |
| ITF M25 Pensacola | 2021/05/21 14:30 | Alejandro Gonzalez v Patrick Kypson | 4-6,0-6 |
| ITF M25 Pensacola | 2021/05/20 14:25 | Juan A H Serrano v Alejandro Gonzalez | 3-6,2-6 |
| ITF M25 Pensacola | 2021/05/19 19:35 | John Bernard v Alejandro Gonzalez | 2-6,1-6 |
| ATP Gstaad | 2021/07/17 14:30 | Enzo Couacaud v Pedro Sakamoto | 6-1,6-3 |
| Challenger Todi | 2021/07/12 14:40 | Flavio Cobolli v Pedro Sakamoto | 3-6,6-4,6-3 |
| ITF M25 Casinalbo | 2021/07/06 14:20 | Pedro Sakamoto v Matteo Arnaldi | 3-6,2-6 |
| Challenger Salinas 2 | 2021/04/27 18:40 | Shuichi Sekiguchi v Pedro Sakamoto | 2-6,4-6 |
| Challenger Tallahassee | 2021/04/21 20:00 | Pedro Sakamoto v Mikael Torpegaard | 0-6,6-3,1-6 |
| Challenger Tallahassee | 2021/04/19 17:00 | Prajnesh Gunneswaran v Pedro Sakamoto | 2-6,6-2,4-6 |
| Challenger Santiago | 2021/03/16 15:15 | Nicolas Alvarez v Pedro Sakamoto | 3-6,6-4,6-3 |
| ATP Santiago | 2021/03/07 14:00 | Alejandro Tabilo v Pedro Sakamoto | 7-6,6-4 |