Head to Head includes singles and doubles results.
| 09/13/21 | Teppei Karasawa ties Oliver He | 3-6; 6-4 Tie | |
| 08/23/21 | Teppei Karasawa over Oliver He |
4-6; 6-4; TB 10-7 |
|
| 07/14/21 | Teppei Karasawa over Oliver He | 7-6; 6-3 | Playoff Match |
| 07/02/21 | Oliver He over Teppei Karasawa | 6-1; 6-7 | |
| 06/18/21 | Teppei Karasawa over Oliver He |
3-6; 6-4; TB 10-6 |
|
| 04/02/21 | Oliver He over Teppei Karasawa |
6-1; 4-6; TB 10-7 |
|
| 03/23/21 | Oliver He over Teppei Karasawa |
6-4; 4-6; TB 10-3 |
