| ITF Hong Kong F4 | 2017/12/17 02:00 | Jie Cui v Douglas Geiwald | 6-2,6-1 |
| ITF Hong Kong F3 | 2017/07/01 02:00 | Christian Oliver Lee v Douglas Geiwald | 6-2,4-6,6-1 |
| ITF Hong Kong F2 Qual | 2017/06/24 02:00 | Jesse Delaney v Douglas Geiwald | 6-1,6-0 |
| ITF Hong Kong F1 | 2017/06/20 04:00 | Ye Cong Mo v Douglas Geiwald | 6-3,6-2 |
| ITF China F3 Qual | 2017/02/25 06:00 | Douglas Geiwald v Boris Butulija | 1-6,0-6 |
| ITF Hong Kong F4 | 2017/12/16 03:00 | Pak Hong Issac Chan v Alec Adamson | 0-6,1-6 |