Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF Argentina F2 | 2018/05/22 13:00 | Martniez, Mateo Nicolas v Oscar Jose Gutierrez | 6-4,4-6,2-6 |
| ITF M15 Faro | 2019/02/28 10:00 | Giovanni Fonio v Oscar Jose Gutierrez | 4-6,3-6 |
| ITF M15 Faro | 2019/02/27 11:00 | Oscar Jose Gutierrez v Tomas Martin Etcheverry | 3-6,6-4,6-2 |
| ITF M15 Faro | 2019/02/26 11:50 | Oscar Jose Gutierrez v Cayre, Paul | 6-3,6-0 |
| ITF M15 Faro | 2019/02/25 14:50 | Oscar Jose Gutierrez v Pedro Araujo | 6-2,6-2 |
| Challenger - Punta del Este | 2019/01/21 21:00 | Gonzalo Lama v Oscar Jose Gutierrez | 7-6,6-2 |
| ITF Dominican Republic F3 | 2018/12/14 15:00 | Oscar Jose Gutierrez v Nick Hardt | 2-6,2-6 |
| ITF Dominican Republic F3 | 2018/12/13 17:10 | Oscar Jose Gutierrez v Tikhomirov, Maksim | 6-3,6-3 |
| ITF Dominican Republic F3 | 2018/12/12 15:55 | Oscar Jose Gutierrez v Hinsching, Joao | 6-3,6-3 |
| ITF M15 Faro | 2019/02/28 11:30 | Martniez, Mateo Nicolas v Garanganga, Takanyi | 6-4,6-1 |
| ITF M15 Faro | 2019/02/27 11:30 | Faria, Luis v Martniez, Mateo Nicolas | 1-6,1-6 |
| ITF M15 Faro | 2019/02/26 10:00 | Jaimee Floyd Angele v Martniez, Mateo Nicolas | 6-4,6-7,5-10 |
| ITF M15 Faro | 2019/02/25 14:05 | Lorenzo Bocchi v Martniez, Mateo Nicolas | 3-6,6-7 |
| ITF M15 Vale Do Lobo | 2019/02/21 11:00 | Martniez, Mateo Nicolas v Jacopo Berrettini | 5-7,5-7 |
| ITF M15 Vale Do Lobo | 2019/02/19 12:00 | Martniez, Mateo Nicolas v Coelho, Fabio | 6-4,6-2 |
| ITF Chile F2 | 2018/11/19 16:30 | Arreche, Nicolas Alberto v Martniez, Mateo Nicolas | 7-5,3-6,6-4 |
| ITF Chile F1 | 2018/11/16 18:00 | Martniez, Mateo Nicolas v Echazu, Mauricio | 4-6,5-7 |