Denis Klok
- Country
- Russia
- Date of birth
- 1998-05-26
- Plays
- right-handed
- Ranking ATP
- 879 · 29 points
- Live ranking
- 863 · 31 points
- Ranking ATP (doubles)
- 1404 · 19 points
- Season 2026
- 3–8; doubles 0–2
Recent matches
| Date | Tournament | Round | Opponent | Score | Result |
|---|---|---|---|---|---|
| 2026-09-28 | Telavi | R32 | Edouard Villoslada | 4-6 2-6 | lost |
| 2026-09-24 | Telavi | R16 | Stijn Paardekooper | 4-6 4-6 | lost |
| 2026-09-23 | Telavi | R32 | Leonardo Angeloni | 6-1 6-3 | won |
| 2026-05-18 | Bosphorus Challenger Cup | Q1 | Daniel Dutra da Silva | 5-7 1-6 | lost |
| 2026-05-11 | KIA Tunis Open | Q1 | Dali Blanch | 4-6 3-6 | lost |
| 2026-04-27 | Shymkent Challenger 2 | Q2 | Svyatoslav Gulin | 1-6 3-6 | lost |
| 2026-04-27 | Shymkent Challenger 2 | Q1 | Maxim Shin | 6-4 7-5 | won |
| 2026-04-27 | Shymkent Challenger 2 | R16 | Viktor Durasovic / Kai Wehnelt (with Oleg Prihodko) | 4-6 6-4 7-10 | lost |
| 2026-04-20 | Shymkent Challenger 1 | Q2 | Mili Poljicak | 4-6 5-7 | lost |
| 2026-04-20 | Shymkent Challenger 1 | Q1 | Dias Tulepbergenov | 6-3 6-2 | won |
| 2026-04-20 | Shymkent Challenger 1 | R16 | Sean Cuenin / Mathys Erhard (with Oleg Prihodko) | 5-7 6-7 | lost |
| 2026-03-09 | Rwanda Challenger 2 | Q1 | Dillon Beckles | 6-7 6-3 3-6 | lost |
| 2026-03-02 | Rwanda Challenger | Q1 | Michiel de Krom | 2-6 4-6 | lost |