Ivan Sergeyev
Ivan Sergeyev is a retired professional Ukrainian tennis player.Singles: 4 (2–2)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 5 August 2009 | Saransk, Russia | Clay |  Mikhail Kukushkin | 3–6, 1–6 |
| Runner-up | 2. | 23 August 2009 | Qarshi, Uzbekistan | Hard |  Rainer Eitzinger | 3–6, 6–1, 6–7 |
| Winner | 3. | 30 August 2009 | Almaty, Kazakhstan | Hard |  Dustin Brown | 6–3, 5–7, 6–4 |
| Winner | 4. | 1 August 2010 | Saransk, Russia | Clay |  Marek Semjan | 7–6, 6–1 |
