Round: 44 Ground: Hardcourt outdoor
| ITF - Sharm El Sheikh M15 | 2019/11/10 12:00 | Nikolas Lahky v Stefan Cizelj-Zivkovic | 6-1,6-4 |
| ITF - Opawa M15 | 2019/10/29 14:10 | Nikolas Lahky v Lucas Catarina | 2-6,1-6 |
| ITF M15 Tabarka | 2019/10/06 11:00 | Ignacio Vinas v Nikolas Lahky | 6-3,7-5 |
| ITF M15 Tabarka | 2019/10/02 08:30 | Nikolas Lahky v Marc Dijkhuizen | 3-6,5-7 |
| ITF M15 Tabarka | 2019/09/30 08:30 | Nikolas Lahky v Miguel Fernando Pereira | 2-6,6-4,10-2 |
| ITF M15 Tabarka | 2019/09/29 11:00 | Gregorio Lulli v Nikolas Lahky | 7-5,1-6,5-10 |
| ITF - Ricany M25 | 2019/09/22 08:00 | Nikolas Lahky v Noah Thurner | 3-6,6-3,8-10 |
| ITF M15 Szekesfehervar | 2019/09/02 08:00 | Juan Pablo Paz v Nikolas Lahky | 6-2,6-2 |
| ITF - Sharm El Sheikh M15 | 2019/11/10 12:00 | Sahil Gaware v Yuichiro Inui | 3-6,4-6 |
| ITF - Sharm El Sheikh M15 | 2019/11/05 10:00 | Haadin Bava v Yuichiro Inui | 4-6,6-3,10-7 |
| ITF - Sharm El Sheikh M15 | 2019/11/04 10:00 | Daniel Kossek v Yuichiro Inui | 2-6,2-6 |
| ITF - Sharm El Sheikh M15 | 2019/11/03 08:00 | Alejandro Hastings v Yuichiro Inui | 3-6,3-6 |
| ITF - Karuizawa M15 | 2019/05/28 01:00 | Daisuke Sumizawa v Yuichiro Inui | 6-4,7-6 |
| ITF M15 Tabarka | 2019/05/23 10:00 | Yuichiro Inui v Mohamed Aziz Dougaz | 5-7,1-6 |
| ITF M15 Tabarka | 2019/05/21 11:10 | Nicolas Tepmahc v Yuichiro Inui | 6-4,1-6,3-6 |
| ITF M15 Tabarka | 2019/05/20 12:30 | Yuichiro Inui v Ashwin R Sharma | 6-4,4-6,10-7 |