Marc Sieber defeated Timur Kiuamov 6-4 7-6 in the Turkey F16 round of 16 on clay. The result followed the form book — Marc Sieber came in leading the head-to-head 1–0. Marc Sieber extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-01-22 | Turkey F3 | R16 | hard | Marc Sieber | 4-6 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.