Stadium: Shirley Lai Ct Round: 54 Ground: Hardcourt outdoor
| Davis Cup | 2021/10/23 06:15 | Namazbek Diushembiev v Derek Okuhama | 0-6,6-7 |
| Davis Cup | 2019/09/13 07:00 | Abedallah Shelbayh v Derek Okuhama | 6-1,6-2 |
| ITF Guam F1 | 2018/06/18 01:20 | Yuta Shimizu v Derek Okuhama | 6-0,6-0 |
| ITF Guam F1 | 2018/06/17 01:00 | Alex Brenner v Derek Okuhama | 6-1,6-0 |
| ITF Guam F1 | 2017/06/17 00:00 | Masayoshi Ono v Derek Okuhama | 6-0,6-1 |
| ITF Guam F1 | 2016/05/21 00:00 | Steven Goh v Derek Okuhama | 6-0,6-0 |