Efe Ustundag defeated Branislav Sekac 6-3 4-6 6-4 in the Uzbekistan F4 round of 32 on hard. The upset overturned the form book — Branislav Sekac came in leading the head-to-head 1–0. Efe Ustundag claimed a first win over Branislav Sekac in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-11-20 | India F6 | R16 | hard | Branislav Sekac | 6-4 6-0 |