Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Santiago Qual | 2018/03/03 18:35 | Pedro Sakamoto v Miljan Zekic | 2-6,6-3,6-7 |
| ATP Sao Paulo Qual | 2018/02/25 16:10 | Pedro Sakamoto v Guilherme Clezar | 2-6,1-6 |
| ATP Sao Paulo Qual | 2018/02/24 17:25 | Tommy Robredo v Pedro Sakamoto | 6-7,4-6 |
| ATP Quito Qual | 2018/02/04 17:00 | Andrej Martin v Pedro Sakamoto | 6-4,6-4 |
| ATP Quito Qual | 2018/02/03 16:00 | Pedro Sakamoto v Daniel Munoz-De La Nava | 3-6,6-4,6-4 |
| ITF USA F6 | 2018/01/30 16:00 | Junior Alexander Ore v Pedro Sakamoto | 5-7,6-4,7-6 |
| ITF USA F5 | 2018/01/26 15:30 | Pedro Sakamoto v Roberto Cid Subervi | 0-6,1-6 |
| ITF USA F5 | 2018/01/25 16:50 | Pedro Sakamoto v Eros Siringo | 6-3,6-3 |
| ITF Greece F2 | 2018/03/04 08:00 | Diego Matos v Marco Miceli | 5-7,5-7 |
| ITF Greece F2 | 2018/03/03 07:30 | Dusan Rajic v Diego Matos | 4-6,3-6 |
| ITF Greece F1 | 2018/02/28 08:30 | Danilo Petrovic v Diego Matos | 6-3,6-4 |
| ITF Greece F1 | 2018/02/26 13:00 | Diego Matos v Aria Harajchi | 6-4,6-2 |
| ITF Greece F1 | 2018/02/25 09:00 | Diego Matos v Masayoshi Ono | 3-6,7-6,6-4 |
| ITF Portugal F1 | 2018/02/19 10:00 | Diego Matos v Leonard Von Hindte | 6-3,3-6,4-6 |
| ITF Portugal F1 | 2018/02/18 13:00 | Diego Matos v Sandro Kopp | 6-7,6-2,6-1 |
| ITF Portugal F1 | 2018/02/17 12:30 | Grigoriy Korobeynikov v Diego Matos | 2-6,3-6 |