Daniel Siniakov

Daniel Siniakov (born 15 January 2003) is a Czech tennis player. Siniakov has a career high ATP singles ranking of No. 640 achieved on 8 December 2025 and a career high ATP doubles ranking of No. 344 achieved on 8 December 2025.^[1]

Daniel Siniakov

Country (sports)	Czech Republic
Born	(2003-01-15) 15 January 2003 (age 22) 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. 640 (8 December 2025)
Current ranking	No. 640 (8 December 2025)
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. 344 (8 December 2025)
Current ranking	No. 344 (8 December 2025)
Last updated on: 8 December 2025.

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)

Legend ATP Challenger Tour (1–0)

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]