Daniel Siniakov
| Country (sports) |  Czech Republic |
|---|---|
| Born | 15 January 2003 Hradec Králové, Czech Republic |
| Height | 1.83 m (6 ft 0 in) |
| Plays | Right-handed (two-handed backhand) |
| Prize money | $45,969 |
| Singles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 636 (9 February 2026) |
| Current ranking | No. 636 (9 February 2026) |
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 1 Challenger, 5 ITF |
| Highest ranking | No. 333 (5 January 2026) |
| Current ranking | No. 338 (2 February 2026) |
| Last updated on: 9 February 2026. | |
Daniel Siniakov (born 15 January 2003) is a Czech tennis player. Siniakov has a career high ATP singles ranking of No. 636 achieved on 9 February 2026 and a career high ATP doubles ranking of No. 333 achieved on 5 January 2026.[1]
Siniakov has won one ATP Challenger doubles title at the 2025 INTARO Open II.
Daniel is younger brother of grandslam champion and world No. 1 player Kateřina Siniaková.
ATP Challenger Tour finals
Doubles: 1 (1 title)
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Win | 1–0 | Sep 2025 | Târgu Mureș, Romania | Challenger | Hard | Dominik Reček
|
 Simone Agostini Tommaso Compagnucci
|
6–2, 5–7, [11–9] |