Marc Sieber defeated Timur Kiuamov 4-6 6-1 6-3 in the Turkey F3 round of 16 on hard. 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 |
|---|---|---|---|---|---|
| 2018-04-23 | Turkey F16 | R16 | clay | Marc Sieber | 6-4 7-6(1) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.