Estadio: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Champaign | 2021/07/29 17:00 | Gijs Brouwer v Jumpei Yamasaki | 6-3,6-0 |
| ITF M25 Champaign | 2021/07/28 19:10 | Martin Damm v Jumpei Yamasaki | 6-7,6-7 |
| ITF 15 Antalya | 2021/05/02 06:00 | Jumpei Yamasaki v Federico Bertuccioli | 6-2,4-6,10-6 |
| ITF 15 Antalya | 2021/04/27 10:30 | Mick Veldheer v Jumpei Yamasaki | 4-6,6-1,6-0 |
| ITF 15 Antalya | 2021/04/20 07:00 | Jumpei Yamasaki v Bogdan Bobrov | 3-6,5-7 |
| ITF 15 Antalya | 2021/04/13 07:00 | Jumpei Yamasaki v Karl Friberg | 1-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/03 07:30 | Martins Podzus v Jumpei Yamasaki | 7-5,6-3 |
| ITF M15 Sharm El Sheikh | 2021/02/24 12:25 | Jumpei Yamasaki v Shintaro Imai | 6-7,6-7 |
| ITF M15 Edwardsville | 2021/07/19 16:30 | Ethan Quinn v Kǎ sēn·hā sī jīn sī | 7-5,6-2 |
| ITF M25 Edwardsville | 2019/08/08 17:30 | Kǎ sēn·hā sī jīn sī v Kevin King | 2-6,2-6 |
| ITF M25 Edwardsville | 2019/08/07 20:50 | Alan Kohen v Kǎ sēn·hā sī jīn sī | 3-6,3-6 |
| ITF M25 Edwardsville | 2019/08/06 14:00 | Kǎ sēn·hā sī jīn sī v Andrew Fenty | 4-6,6-1,10-5 |
| ITF M25 Edwardsville | 2019/08/05 14:00 | Preston Touliatos v Kǎ sēn·hā sī jīn sī | 5-7,6-3,5-10 |
| ITF M25 Decatur | 2019/08/01 16:00 | Kǎ sēn·hā sī jīn sī v Liam Caruana | 2-6,2-6 |
| ITF M25 Decatur | 2019/07/31 15:00 | Kǎ sēn·hā sī jīn sī v Langford Hills | 6-4,7-5 |
| ITF EE. UU. F22 | 2018/08/08 17:55 | Axel Geller v Kǎ sēn·hā sī jīn sī | 4-6,6-2,6-1 |