Tatsuki Seko

Tatsuki Seko (瀬古 樹, Seko Tatsuki; born 22 December 1997) is a Japanese footballer who plays as defensive midfielder for EFL Championship club Stoke City.

Tatsuki Seko
瀬古 樹

Personal information
Date of birth	(1997-12-22) 22 December 1997 (age 27)[1]
Place of birth	Adachi, Tokyo, Japan[1]
Height	1.75 m (5 ft 9 in)[1]
Position	Defensive midfielder
Team information
Current team	Stoke City
Number	12
Youth career
2008–2015	Mitsubishi Yowa
College career
Years	Team	Apps	(Gls)
2016–2019	Meiji University
Senior career*
Years	Team	Apps	(Gls)
2020–2021	Yokohama FC	66	(3)
2022–2024	Kawasaki Frontale	66	(1)
2024–	Stoke City	36	(0)
* Club domestic league appearances and goals as of 20:52, 21 October 2025 (UTC)

Career

Early career

Seko was born in Adachi, Tokyo and began playing football with the youth teams at Mitsubishi Yowa and in 2015 he was selected to play for the Japan national under-18 team and participated in a training camp.^[2] He entered Meiji University in 2016 and was a regular with the football team from his fourth year.^[3] In 2019 he rejected an offer from J2 League side Montedio Yamagata and later agreed to turn professional with Yokohama FC in 2020.^[4] In August of the same year Seko was approved as a J.League designated special player.^[5]

Yokohama FC

Seko officially joined Yokohama FC on 13 January 2020.^[6] He made his J1 League debut on the opening day against Vissel Kobe, scoring in a 1–1 draw, which was Yokohama's first top-flight goal for 13 years.^[7] Seko played 36 times in the 2020 J1 League season as relegation was scrapped due to the COVID-19 pandemic and Yokohama finished in 15th place.^[1][8] In the 2021 season Seko played 38 times as Yokohama were relegated finishing in 20th.^[1][9]

Kawasaki Frontale

Following Yokohama's relegation Seko was reported to be wanted by J1 League clubs Nagoya Grampus and Sanfrecce Hiroshima.^[10] Eventually league champions Kawasaki Frontale signed Seko on 23 December 2021.^[11] He made 19 appearances in the 2022 season as Kawasaki missed out on the league title by two points to Yokohama F. Marinos.^[12] In the 2023 season, Seko played 39 times as Frontale finished in 8th position and won the 2023 Emperor's Cup after beating Kashiwa Reysol in the final on penalties.^[13] Seko was captain as Kawasaki Frontale defeated Vissel Kobe 1–0 in the 2024 Japanese Super Cup.^[14] It was announced by Frontale in August 2024 that Seko had left the team to complete a move abroad.^[15]

Stoke City

Seko signed a three-year contract with EFL Championship club Stoke City on 30 August 2024.^[16][17] Seko made 28 appearances in the 2024–25 season, as Stoke avoided relegation on the final day, finishing in 18th position.^[18][19][20]

Career statistics

As of match played 21 October 2025.^[1]

Club	Season	League			National cup[a]		League cup[b]		Contentinal		Other		Total
		Division	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals
Meiji University	2019[1]	—			2	0	—		—		—		2	0
Yokohama FC	2020[1]	J1 League	33	2	0	0	3	0	—		0	0	36	2
	2021[1]	J1 League	33	1	0	0	5	0	—		0	0	38	1
	Total		66	3	0	0	8	0	—		0	0	74	3
Kawasaki Frontale	2022[21]	J1 League	13	0	2	1	1	0	2[c]	0	1[d]	0	19	1
	2023[22]	J1 League	28	1	6	2	5	2	0	0	0	0	39	5
	2024[23]	J1 League	25	0	2	0	0	0	7[c]	1	1[d]	0	35	1
	Total		66	1	10	3	6	2	9	1	2	0	93	7
Stoke City	2024–25[23]	EFL Championship	25	0	2	0	1	0	—		—		28	0
	2025–26[24]	EFL Championship	11	0	0	0	2	0	—		—		13	0
	Total		36	0	2	0	3	0	—		—		41	0
Career total			168	4	14	3	17	2	9	1	2	0	208	10

1. Includes Emperor's Cup and FA Cup
2. Includes EFL Cup and J. League Cup
3. Appearances in AFC Champions League
4. Appearances in Japanese Super Cup

Honours

Kawasaki Frontale

• Emperor's Cup: 2023^[25]
• Japanese Super Cup: 2024^[26]