Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Darwin | 2019/09/25 00:30 | Yu Hsiou Hsu v Issei Okamura | 6-0,7-5 |
| ITF M15 Hua Hin | 2019/09/04 07:20 | Issei Okamura v Bradley Mousley | 4-6,5-7 |
| ITF M15 Hua Hin | 2019/09/03 08:50 | Issei Okamura v Uisung Park | 6-3,6-4 |
| ITF M15 Hua Hin | 2019/09/02 04:40 | Issei Okamura v Bingyu Yu | 6-1,6-2 |
| ITF M15 Hua Hin | 2019/08/29 04:05 | Issei Okamura v Yu Hsiou Hsu | 2-6,0-6 |
| ITF M15 Hua Hin | 2019/08/28 03:00 | Issei Okamura v Soichiro Moritani | 6-4,3-6,6-3 |
| ITF M15 Hua Hin | 2019/08/21 09:00 | Issei Okamura v Yu Hsiou Hsu | 2-6,1-6 |
| Challenger Yokkaichi | 2019/08/05 06:20 | Issei Okamura v Jie Cui | 3-6,3-6 |
| Challenger Buenos Aires | 2019/09/24 14:00 | Mariano Kestelboim v Facundo Diaz Acosta | 3-6,7-5,5-7 |
| ITF M15 Kramsach | 2019/07/18 10:30 | Patrik Hartmeier v Mariano Kestelboim | 6-4,7-6 |
| ITF M15 Kramsach | 2019/07/17 12:45 | Johannes Bangratz v Mariano Kestelboim | 6-3,3-6,1-6 |
| ITF M25 Pardubice | 2019/06/28 09:00 | Michael Vrbensky v Mariano Kestelboim | 6-2,4-6,6-7 |
| ITF M25 Pardubice | 2019/06/27 08:30 | Mohamed Aziz Dougaz v Mariano Kestelboim | 5-7,2-6 |
| ITF M25 Pardubice | 2019/06/25 14:40 | Mariano Kestelboim v Jan Satral | 7-6,6-1 |
| ITF M15 Balatonalmadi | 2019/06/22 09:00 | Mariano Kestelboim v Christopher O'Connell | 1-6,7-6,1-6 |
| ITF M15 Balatonalmadi | 2019/06/21 08:00 | Dalibor Svrcina v Mariano Kestelboim | 2-6,3-6 |