Stadium: Court 7 Round: 44 Ground: Hardcourt outdoor
| Challenger Yokkaichi | 2019/08/05 02:20 | Sho Shimabukuro v Yuki Mochizuki | 6-4,6-2 |
| ITF M25 Hong Kong | 2019/06/14 03:00 | Agustin Velotti v Yuki Mochizuki | 6-2,6-3 |
| ITF M25 Hong Kong | 2019/06/13 03:45 | Yuki Mochizuki v Jayden Court | 6-2,7-6 |
| ITF M25 Hong Kong | 2019/06/12 03:05 | Yuki Mochizuki v Coleman Wong | 6-1,6-4 |
| ITF M25 Hong Kong | 2019/06/08 03:00 | Yuki Mochizuki v Shuichi Sekiguchi | 3-6,6-7 |
| ITF M25 Hong Kong | 2019/06/07 02:00 | Chun Hsin Tseng v Yuki Mochizuki | 4-6,3-6 |
| ITF M25 Hong Kong | 2019/06/05 02:00 | Luca Castelnuovo v Yuki Mochizuki | 2-6,2-6 |
| ITF M15 Karuizawa | 2019/06/02 02:00 | Ko Suzuki v Yuki Mochizuki | 4-6,6-4,2-6 |
| ITF M15 Akishima | 2019/06/14 03:15 | Rio Noguchi v Keisuke Saitoh | 6-1,6-1 |
| ITF M15 Akishima | 2019/06/13 04:05 | Keisuke Saitoh v Gengo Kikuchi | 7-5,6-0 |
| ITF M15 Akishima | 2019/06/12 02:40 | Keisuke Saitoh v Kyohei Yamanaka | 6-1,6-3 |
| ITF M15 Kashiwa | 2019/04/04 01:00 | Yusuke Takahashi v Keisuke Saitoh | 6-2,6-1 |
| ITF M15 Kofu | 2019/03/19 01:00 | Keisuke Saitoh v Jumpei Yamasaki | 2-6,3-6 |
| ITF M15 Nishi-Tokyo | 2019/03/13 01:00 | Shuichi Sekiguchi v Keisuke Saitoh | 6-3,6-2 |
| ITF M15 Nishi-Tama | 2019/03/08 02:40 | Seong Chan Hong v Keisuke Saitoh | 6-3,6-0 |
| ITF M15 Nishi-Tama | 2019/03/06 01:00 | Soichiro Moritani v Keisuke Saitoh | 2-6,0-6 |