Marc Sieber defeated Nik Razborsek 6-3 6-0 in the Croatia F3 qualifying round on clay. Marc Sieber extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-01-15 | Turkey F2 | R16 | hard | Marc Sieber | 6-3 6-3 |
| 2013-01-28 | Turkey F4 | R16 | hard | Nik Razborsek | 1-0 |
Averages over each player's completed matches in the selected window (141 vs 95). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About