Stadium: Court 1 Round: 44 Ground: Clay
| ITF Brazil F1 | 2018/04/21 16:00 | Gustavo De O Cruz v Felipe Muzzi | 6-0,6-1 |
| ITF Brazil F4 | 2017/11/27 17:00 | Orlando Luz v Gustavo De O Cruz | 6-4,6-2 |
| ITF USA F34 Qual | 2017/10/15 15:00 | Gustavo De O Cruz v Strong Kirchheimer | 3-6,3-6 |
| ITF USA F33 Qual | 2017/10/08 15:00 | Gustavo De O Cruz v Thibault Cancel | 4-6,3-6 |
| ITF USA F33 Qual | 2017/10/07 16:30 | Gustavo De O Cruz v Varun Jayaram | 6-1,6-3 |
| ITF USA F32 | 2017/09/23 19:30 | Aleksandre Bakshi v Gustavo De O Cruz | 6-2,6-2 |
| ITF USA F31 | 2017/09/15 17:00 | Gustavo De O Cruz v Ku Keon Kang | 3-6,6-4,2-6 |
| ITF USA F30 | 2017/09/09 16:00 | Strong Kirchheimer v Gustavo De O Cruz | 6-3,6-4 |
| ITF Portugal F8 | 2018/04/18 12:10 | Igor Sao Thiago v Miliaan Niesten | 1-6,3-6 |
| ITF Portugal F8 Qual | 2018/04/16 09:30 | Goncalo Falcao v Igor Sao Thiago | 6-4,6-1 |
| ITF Portugal F8 Qual | 2018/04/15 09:00 | Andre Rodeia v Igor Sao Thiago | 1-6,5-7 |
| ITF Portugal F3 | 2018/03/05 14:00 | Igor Sao Thiago v Jose-Ricardo Nunes | 1-6,4-6 |
| ITF Portugal F2 Qual | 2018/02/24 12:30 | Igor Sao Thiago v Pedro Vives Marcos | 6-7,1-6 |
| ITF Portugal F1 | 2018/02/17 12:30 | Rafael Tosetto v Igor Sao Thiago | 6-4,4-6,6-4 |
| ITF Peru F1 | 2017/12/10 22:00 | Igor Sao Thiago v Duilio Vallebuona | 4-6,2-6 |
| ITF Brazil F4 | 2017/11/28 13:10 | Daniel Dutra Da Silva v Igor Sao Thiago | 6-1,6-1 |