Seita Watanabe

Seita Watanabe (渡邉 聖太, Watanabe Seita; born 25 December 2000) is a Japanese tennis player who specializes in doubles. He has a career high ATP doubles ranking of world No. 135 achieved on 16 June 2025.^[1]

Seita Watanabe

Country (sports)	Japan
Born	(2000-12-25) 25 December 2000 (age 24) Fukushima, Japan
Height	1.80 m (5 ft 11 in)
Plays	Right-handed (two-handed backhand)
Prize money	$81,308
Singles
Career record	0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0
Highest ranking	No. 824 (18 November 2024)
Current ranking	No. 884 (6 January 2025)
Doubles
Career record	0–2 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	9 ITF
Highest ranking	No. 135 (16 June 2025)
Current ranking	No. 161 (28 July 2025)
Grand Slam doubles results
Australian Open	1R (2025)
Last updated on: 31 July 2025.

Career

Watanabe made his ATP main draw debut at the 2023 Japan Open Tennis Championships after entering the doubles main draw with Takeru Yuzuki as lucky losers.^{[citation needed]}

Watanabe made his Grand Slam main draw debut at the 2025 Australian Open after entering the doubles main draw with Takeru Yuzuki as a wildcard pair.^[2]