Stadium: Court 3 Round: 27
| ITF Singapore F1 | 2018/05/17 03:00 | Kaito Uesugi v Thai-Son Kwiatkowski | 2-6,7-5,1-6 |
| ITF Singapore F2 | 2018/05/23 02:00 | Maverick Banes v Kaito Uesugi | 4-6,6-4,1-6 |
| ITF Singapore F2 | 2018/05/22 07:45 | Justin Barki v Kaito Uesugi | 2-6,4-6 |
| ITF Singapore F2 | 2018/05/20 03:00 | Kaito Uesugi v Skyler Butts | 6-0,6-3 |
| ITF Singapore F2 | 2018/05/19 03:00 | Kaito Uesugi v Congsup Congcar | 6-1,6-2 |
| ITF Singapore F1 | 2018/05/17 03:00 | Kaito Uesugi v Thai-Son Kwiatkowski | 2-6,7-5,1-6 |
| ITF Singapore F1 | 2018/05/16 04:20 | Kaito Uesugi v Tom Evans | 6-2,6-4 |
| ITF Singapore F1 | 2018/05/14 02:00 | Kaito Uesugi v Wei-De Lin | 6-3,6-2 |
| ITF China F5 | 2018/05/11 05:00 | Kaito Uesugi v Harri Heliovaara | 1-6,2-6 |
| ITF Singapore F2 | 2018/05/23 06:50 | Thai-Son Kwiatkowski v Yu Hsiou Hsu | 6-2,6-4 |
| ITF Singapore F2 | 2018/05/21 02:00 | Soichiro Moritani v Thai-Son Kwiatkowski | 3-6,2-6 |
| ITF Singapore F1 | 2018/05/19 03:00 | Soichiro Moritani v Thai-Son Kwiatkowski | 2-6,2-6 |
| ITF Singapore F1 | 2018/05/17 03:00 | Kaito Uesugi v Thai-Son Kwiatkowski | 2-6,7-5,1-6 |
| ITF Singapore F1 | 2018/05/16 02:00 | Shunrou Takeshima v Thai-Son Kwiatkowski | 4-6,6-4,2-6 |
| ITF Singapore F1 | 2018/05/15 04:25 | Michael Look v Thai-Son Kwiatkowski | 0-6,5-7 |
| Challenger Marbella Qual | 2018/03/24 09:15 | Marco Trungelliti v Thai-Son Kwiatkowski | 6-7,7-5,6-1 |
| Challenger Dallas | 2018/01/30 19:55 | Thai-Son Kwiatkowski v Reilly Opelka | View |