Stadium: Show Court Round: 25 Ground: Hardcourt outdoor
| Challenger Lexington | 2018/07/31 01:45 | Tom Jomby v Lucas Catarina | 6-2,7-6 |
| Challenger Binghamton | 2018/07/26 23:00 | Lucas Catarina v Marcel Granollers | 2-6,4-6 |
| Challenger Binghamton | 2018/07/26 15:45 | William Blumberg v Lucas Catarina | 4-6,6-2,4-6 |
| Challenger Gatineau Qual | 2018/07/15 20:00 | Lucas Catarina v Justin Boulais | 6-0,5-7,6-7 |
| Challenger Gatineau Qual | 2018/07/15 02:00 | Lucas Catarina v Kento Takeuchi | 6-3,6-3 |
| Challenger Winnetka | 2018/07/10 19:05 | Mohamed Safwat v Lucas Catarina | 6-2,6-4 |
| Challenger Fergana Qual | 2018/06/16 05:00 | Lucas Catarina v Kristian Lozan | 3-6,6-7 |
| ITF Israel F8 | 2018/06/06 10:45 | Ben Patael v Lucas Catarina | 7-6,6-3 |
| Challenger Jinan | 2018/08/04 07:30 | Makoto Ochi v Tak Khunn Wang | 0-6,0-6 |
| Challenger Chengdu | 2018/07/31 03:00 | Makoto Ochi v Alexander Bublik | 2-6,5-7 |
| Challenger Chengdu Qual | 2018/07/29 03:00 | Manish Sureshkumar v Makoto Ochi | 4-6,6-2,3-6 |
| Challenger Chengdu Qual | 2018/07/28 05:45 | Sami Reinwein v Makoto Ochi | 5-7,2-6 |
| Challenger Granby Qual | 2018/07/23 21:00 | Wishaya Trongcharoenchaikul v Makoto Ochi | 6-3,3-6,6-3 |
| Challenger Granby Qual | 2018/07/23 02:10 | Borna Gojo v Makoto Ochi | 1-6,1-6 |
| Challenger Gatineau Qual | 2018/07/15 16:40 | Jacob Grills v Makoto Ochi | 1-6,7-5,6-1 |
| Challenger Gatineau Qual | 2018/07/14 21:25 | Suraj R Prabodh v Makoto Ochi | 2-6,0-6 |