Stadium: Center Court Round: 25 Ground: Clay
| ITF Brazil F4 | 2017/11/30 13:45 | Oscar Jose Gutierrez v Fernando Yamacita | 6-1,6-4 |
| ITF Brazil F1 | 2018/04/27 17:00 | Camilo Ugo Carabelli v Oscar Jose Gutierrez | 4-6,6-3,6-1 |
| ITF Brazil F1 | 2018/04/25 15:30 | Tsuchiya, Alexandre v Oscar Jose Gutierrez | 4-6,7-6,2-6 |
| ITF Brazil F1 | 2018/04/23 19:15 | Ribeiro Marcondes, Igor v Oscar Jose Gutierrez | 6-2,2-6,3-6 |
| Turkey F12, Singles Qualifying | 2018/03/29 13:00 | Oscar Jose Gutierrez v Dimitar Kuzmanov | 3-6,1-6 |
| Turkey F12, Singles Qualifying | 2018/03/28 08:40 | Netuschil, Marvin v Oscar Jose Gutierrez | 4-6,0-6 |
| ITF Turkey F11 | 2018/03/21 09:10 | Oscar Jose Gutierrez v Juan Pablo Varillas | 3-6,1-6 |
| Turkey F10, Singles Qualifying | 2018/03/17 07:30 | Oscar Jose Gutierrez v Nedelko, Ivan | 1-6,7-5,0-6 |
| Turkey F10, Singles Qualifying | 2018/03/16 07:30 | Oscar Jose Gutierrez v Mikhail Korovin | 6-3,2-6,6-4 |
| ITF Brazil F2 | 2018/04/30 15:00 | Fernando Yamacita v Luis Britto | 6-1,6-2 |
| ITF Brazil F2 | 2018/04/29 17:30 | Fernando Yamacita v Ferrari Maciel, Pedro | 6-2,6-3 |
| ITF Brazil F1 | 2018/04/24 18:30 | Tsuchiya, Alexandre v Fernando Yamacita | 6-4,6-2 |
| ITF Brazil F1 | 2018/04/23 13:00 | Fernando Yamacita v Rodrigues Girotto, Alexandre Gabriel | 6-3,6-4 |
| ITF Brazil F1 | 2018/04/22 13:00 | Fernando Yamacita v Araujo, Rai Vicente de | 5-7,6-2,6-1 |
| Sao Paulo, Brazil, Qualifying | 2018/02/24 19:20 | Fernando Yamacita v Clezar, Guilherme | 1-6,6-7 |
| ITF USA F6 | 2018/01/27 15:00 | Fernando Yamacita v C. Oosterbaan, Paul | 6-1,5-7,6-7 |
| ITF USA F5 | 2018/01/24 17:35 | Benitez Chavarriaga, Juan Manuel v Fernando Yamacita | 6-4,6-3 |