Sai van

Wermeskerken

RB Ratchaburi #31

Right-Back · Defender · #31

Sai van Wermeskerken

Ratchaburi Thai League

Date of birth / Age: 32 · 28 Jun 1994
Citizenship: JapanNetherlands
Foot: Right
Height · Weight: 1.78 m · 72 kg
Main position: Right-Back
Contract until: 2027

Top 13% of full-backs in the world
#271 full-back aged 30+
Top 25% in the J1 League

Benchmarks

full-backs with 900+ minutes, last two seasons

World rank: #960; full-back in the world by TSH Score
In his age group: #271; among full-backs aged 30+
In his league: 75%; of J1 League full-backs rank below him
Finishing: −1.5; goals below expected · better than 20% of players

Shooting

last 3 seasons · no penalties

Goals

1 Expected

2.5

33 shots. He scores fewer than the chances he gets would predict.

Creating

last 3 seasons

Assists

6 Expected

4.6

Teammates converted more of his chances than expected.

Season 2025

Appearances: 40
Starting eleven: 35
Goals: 2
Assists: 4
Yellow cards: 3
Second yellows: 1
Red cards: 0
Minutes: 3,107

Starting eleven88%

35 of 40 appearances

Minutes played3,107

78 per appearance

Goal involvement6

2 goals · 4 assists

Positions played

270 matches · since 2014/15

DMAMCBRWCMLBRB

Position	Apps	G	A
Right-Back	209	3	12
Left-Back	40	1	2
Central Midfield	8	1	0
Right Winger	5	0	0
Other · CB, AM, DM	8	0	0

Career stats

Season

Competitions

Club

Season	Competition	Club	Apps	Starts	G	A	Yellow cards	Second yellow	Red cards	Min
2026/27	Thai League	Ratchaburi	2	2	0	0	0	0	0	143
2025	J1 League	Kawasaki Frontale	26	24	0	4	2	1	0	2,101
2024/25	AFC Champions League Elite	Kawasaki Frontale	10	8	1	–	0	–	0	686
2025	J-League Cup	Kawasaki Frontale	4	3	1	–	1	–	0	320
2024	J1 League	Kawasaki Frontale	24	21	1	2	5	1	0	1,759
2023/24	Eredivisie	NEC	3	1	0	0	1	0	0	163
2023/24	KNVB Beker	NEC	3	3	1	–	0	–	0	270
2024	J-League Cup	Kawasaki Frontale	3	2	0	–	0	–	0	224
2023/24	AFC Champions League Elite	Kawasaki Frontale	1	0	0	–	0	–	0	1
2024	Super Cup	Kawasaki Frontale	1	1	1	–	0	–	0	80
2022/23	Eredivisie	Cambuur	24	18	1	0	1	0	0	1,681
2022/23	KNVB Beker	Cambuur	1	0	0	–	0	–	0	9
2021/22	Eredivisie	PEC Zwolle	7	2	0	0	1	0	0	275
2020/21	Eredivisie	PEC Zwolle	22	22	0	2	0	0	0	1,975
2020/21	KNVB Beker	PEC Zwolle	1	1	0	–	0	–	0	90
2019/20	Eredivisie	PEC Zwolle	18	14	0	2	1	0	0	1,276
2019/20	KNVB Beker	PEC Zwolle	2	1	0	–	0	–	0	140
2018/19	Eerste Divisie	Cambuur	38	38	1	1	3	0	0	3,376
2018/19	Eredivisie	Cambuur	4	4	0	0	0	0	0	360
2018/19	KNVB Beker	Cambuur	3	2	1	–	0	–	0	244
2017/18	Eerste Divisie	Cambuur	7	6	0	–	1	–	0	570
2017/18	Eerste Divisie	Dordrecht	1	1	0	–	0	–	1	90
2017/18	Play-offs 1/2	Cambuur	2	2	0	–	0	–	0	210
2017/18	KNVB Beker	Cambuur	1	1	0	–	0	–	0	67
2016/17	Eerste Divisie	Dordrecht	31	30	0	0	3	0	0	2,661
2016/17	KNVB Beker	Dordrecht	1	1	0	–	0	–	0	90
2015/16	Eerste Divisie	Dordrecht	31	24	1	1	1	0	0	2,303
2015/16	KNVB Beker	Dordrecht	2	2	0	–	0	–	0	210
2016	World Youth Festival Toulon Maurice Revello	Japan U23	4	4	0	–	0	–	0	273
2014/15	Eredivisie	Dordrecht	1	1	0	0	0	0	0	90

No rows match these filters.
Career total · all competitions			278	239	9	12^*	20	2^*	1	21,737

By competition	Apps	G	A
Eerste Divisie	108	2	2
Eredivisie	79	1	4
J1 League	50	1	6
KNVB Beker	14	2	–
AFC Champions League Elite	11	1	–
J-League Cup	7	1	–
Japan U23	4	0	–
Play-offs 1/2	2	0	–
Thai League	2	0	0
Super Cup	1	1	–

* Assists and second yellows are counted where the data has them, mostly league games from 2014/15; cups and internationals show “–”. Friendlies are excluded. Data as of 2 Nov 2026.

Clubs and transfers

Jul 2026 Jul 2026 · Free Transfer – Ratchaburi Free Transfer Free
Feb 2026 Feb 2026 · Free Agent Kawasaki Frontale – Free Agent Free
Jan 2024 Jan 2024 · Transfer NEC Kawasaki Frontale Transfer
Oct 2023 Oct 2023 · Free Transfer – NEC Free Transfer Free
Jul 2023 Jul 2023 · Free Agent Cambuur – Free Agent Free
Aug 2022 Aug 2022 · Transfer PEC Zwolle Cambuur Transfer
Jul 2019 Jul 2019 · Transfer Cambuur PEC Zwolle Transfer
Aug 2017 Aug 2017 · Transfer Dordrecht Cambuur Transfer
Jul 2013 Jul 2013 · Transfer Ventforet Kofu Dordrecht Transfer

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Player data from the TSH database, updated every week. Spotted something wrong? Tell us · Updated 2026-11-02