Stadium: Quadra 1 Round: 25 Ground: Clay
| Challenger Campinas | 2019/09/30 14:35 | Zukas, Matias v Juan Pablo Ficovich | 2-6,3-6 |
| Challenger - Buenos Aires | 2019/09/23 16:15 | Zukas, Matias v Camilo Ugo Carabelli | 6-4,6-7,2-6 |
| Challenger Banja Luka | 2019/09/10 08:00 | Nedelko, Ivan v Zukas, Matias | 6-1,7-5 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/05 10:50 | Kenneth Raisma v Zukas, Matias | 6-4,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/04 13:35 | Alessandro Ingarao v Zukas, Matias | 4-6,4-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/08/29 11:45 | Zukas, Matias v Alexandros Skorilas | 6-3,6-1 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/08/28 09:45 | Zukas, Matias v Mikalai Haliak | 7-6,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/08/25 08:30 | Tomas Martin Etcheverry v Zukas, Matias | 2-6,6-3,5-7 |
| Challenger Campinas | 2019/09/30 18:40 | Gonzalez, Alejandro v Joao Lucas Reis da Silva | 7-5,7-5 |
| ITF M15 Lambare | 2019/08/25 14:00 | Gonzalo Villanueva v Joao Lucas Reis da Silva | 6-1,6-3 |
| ITF M15 Lambare | 2019/08/24 17:05 | Echazu, Mauricio v Joao Lucas Reis da Silva | 2-6,5-7 |
| ITF M15 Lambare | 2019/08/23 15:35 | Joao Lucas Reis da Silva v Miele, Andre | 7-5,7-5 |
| ITF M15 Lambare | 2019/08/22 15:55 | Joao Lucas Reis da Silva v Leonardo Aboian | 6-1,7-5 |
| ITF M15 Lambare | 2019/08/21 14:00 | Joao Lucas Reis da Silva v Da Silva, Gabriel Ciro | 6-2,5-7,6-4 |
| ITF M15 Santa Cruz | 2019/08/10 19:00 | Joao Lucas Reis da Silva v Juan Bautista Otegui | 3-6,6-4,5-7 |
| ITF M15 Santa Cruz | 2019/08/09 20:00 | Estevez Maximiliano v Joao Lucas Reis da Silva | 1-6,2-6 |