| ITF Japan F5 | 2014/06/03 01:00 | Niki, Takuto v Sasai, Masaki | 6-4,6-4 |
| ITF Japan F6 | 2014/06/14 02:00 | Saito, Takashi v Niki, Takuto | 7-6,6-3 |
| ITF Japan F6 | 2014/06/13 00:00 | Ushida, Atsushi v Niki, Takuto | 4-6,1-6 |
| ITF Japan F6 | 2014/06/11 00:30 | Kazuma Kawachi v Niki, Takuto | 2-6,5-7 |
| ITF Japan F5 | 2014/06/07 05:30 | Niki, Takuto v Kibi, Yuya | 6-4,3-6,6-1 |
| ITF Japan F5 | 2014/06/05 01:00 | Niki, Takuto v Hung, Jui-Chen | 6-2,6-4 |
| ITF Japan F5 | 2014/06/04 04:30 | Niki, Takuto v Numajiri, Keisuke | 6-2,6-4 |
| ITF Japan F5 | 2014/06/03 01:00 | Niki, Takuto v Sasai, Masaki | 6-4,6-4 |
| ITF Guam F1 | 2014/06/01 01:00 | Nedunchezhiyan, Jeevan v Niki, Takuto | 7-6,2-6,5-7 |
| ITF Japan F8 | 2014/06/22 03:00 | Sasai, Masaki v Habusawa, Tetsuro | 6-1,6-0 |
| ITF Japan F7 | 2014/06/19 01:00 | Mclachlan, Ben v Sasai, Masaki | 6-3,6-4 |
| ITF Japan F7 | 2014/06/17 01:00 | Sasai, Masaki v Moritani, Soichiro | 6-1,1-6,6-4 |
| ITF Japan F6 Qual | 2014/06/08 07:30 | Sasai, Masaki v Ushida, Atsushi | 1-6,3-6 |
| ITF Japan F5 | 2014/06/03 01:00 | Niki, Takuto v Sasai, Masaki | 6-4,6-4 |
| ITF Guam F1 | 2014/05/27 00:00 | Sasai, Masaki v Takeshima, Shunrou | 4-6,2-6 |
| ITF Korea F1 Qual | 2014/04/30 01:00 | Kim, Cheong-Eui v Sasai, Masaki | 6-2,6-4 |
| ITF Korea F1 Qual | 2014/04/29 00:30 | Kang, Ku Keon v Sasai, Masaki | 3-6,2-6 |