Branislav Sekac defeated Efe Ustundag 6-4 6-0 in the India F6 round of 16 on hard. The upset overturned the form book — Efe Ustundag came in leading the head-to-head 1–0, but Branislav Sekac had been the form player, winning 3 of their last 4 on hard. Branislav Sekac claimed a first win over Efe Ustundag in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-10-11 | Uzbekistan F4 | R32 | hard | Efe Ustundag | 6-3 4-6 6-4 |