Svyatoslav Knyazev defeated Suren Vartanyan 1-6 6-3 6-4 in the Russia F6 qualifying round of 32 on clay. The result followed the form book — Svyatoslav Knyazev came in leading the head-to-head 1–0. Svyatoslav Knyazev extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-20 | Russia F7 | Q16 | clay | Svyatoslav Knyazev | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.