Mai Gao defeated Andres Haefele 6-2 6-1 in the M15 Monastir 47 q64 on hard. The result followed the form book — Mai Gao came in leading the head-to-head 1–0. Mai Gao extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-11-28 | M15 Monastir 46 | Q64 | hard | Mai Gao | 6-0 6-0 |