Stadium: Centre Court(Cc14) Round: 28
| ITF Singapore F2 | 2018/05/24 03:00 | Kaito Uesugi v Thai-Son Kwiatkowski | 5-7,6-0,2-6 |
| 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 | Moritani, Soichiro v Thai-Son Kwiatkowski | 3-6,2-6 |
| ITF Singapore F1 | 2018/05/19 03:00 | Moritani, Soichiro 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 | Takeshima, Shunrou v Thai-Son Kwiatkowski | 4-6,6-4,2-6 |
| ITF Singapore F1 | 2018/05/15 04:25 | Look, Michael 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 |
| ITF Singapore F2 | 2018/05/24 03:00 | Nolan, Daniel v Niki, Takuto | 6-1,6-7,4-6 |
| ITF Singapore F2 | 2018/05/23 02:00 | Niki, Takuto v Hu, Nicholas S | 6-4,6-4 |
| ITF Singapore F2 | 2018/05/22 03:50 | Frawley, James v Niki, Takuto | 6-2,4-6,1-6 |
| Challenger Seoul Qual | 2018/04/28 03:05 | Kang, Hogi v Niki, Takuto | 6-7,6-2,0-6 |
| ITF Japan F6 | 2018/04/11 01:00 | Makoto Ochi v Niki, Takuto | 7-5,6-3 |
| ITF Japan F5 | 2018/04/04 01:00 | Niki, Takuto v Ehara, Hiroyasu | 2-6,6-2,4-6 |
| ITF Japan F5 | 2018/04/02 05:40 | Niki, Takuto v Yuta Shimizu | 6-2,6-4 |
| ITF Japan F4 | 2018/03/28 02:40 | Niki, Takuto v Naoki Tajima | 5-7,6-7 |