Koki Yasukawa
4️⃣Japan fourth official · 1 competition
Koki Yasukawa is a Japan football fourth official. They have officiated as fourth official. In total they have 1 tracked match appearances across 1 competition, broken down as 1× 4th Official. Most-worked competitions include J1 League. This profile is built from official match-appointment data.
Top Competitions
Season-by-Season Activity
| Season | Total | 4th |
|---|---|---|
| 2026/27 | 1 | 1 |
Career Milestones
Career-firsts tracked in our database.
Match Activity
1 match · 1 yearPeer Benchmark
Median in Japan: 10 matches · 1 season
Recent Matches
Most-Officiated Teams
Least-Officiated Teams
Clubs in their current competition, ordered by how seldom this official has worked their matches.
Each number = matches officiated involving that club · 0× = never officiated them
Other officials from Japan
Career Events
Career events (UEFA courses, awards) will appear here when available.
Season Reports
Rarely Works With
Active officials in J1 League they have shared fewest matches with.
- 1Akihiko IkeuchiReferee · 37 in leagueNever
- 2Hiroyuki KimuraReferee · 37 in leagueNever
- 3Futoshi NakamuraReferee · 36 in leagueNever
- 4Jumpei IidaReferee · 33 in leagueNever
- 5Koichiro FukushimaReferee · 33 in leagueNever
- 6Masuya UedaReferee · 33 in leagueNever
- 7Hiroki KasaharaReferee · 30 in leagueNever
- 8Kōei KoyaReferee · 30 in leagueNever
Explore the full officiating network — partnerships, observers, clubs and venues — on the network analysis page.
Top Destinations
- 1Toyota1×
Venues Visited(1)
Stadiums Koki Yasukawa has officiated at. Filter by competition or season to focus the map.
1 venue · 1 match
Toyota Stadium (Japan)Toyota1 match
Frequently Asked Questions
What is Koki Yasukawa's primary role?▾
Koki Yasukawa is a Japan football fourth official.
How many matches has Koki Yasukawa officiated?▾
Koki Yasukawa has 1 tracked match appearances across 1 competition (1× 4th Official).
Which competitions does Koki Yasukawa work in?▾
Koki Yasukawa has most often officiated in J1 League.
Is Koki Yasukawa a FIFA referee?▾
Koki Yasukawa is not currently recorded as a FIFA badge holder in our data.
Which teams has Koki Yasukawa officiated most?▾
Among domestic clubs, Koki Yasukawa has most frequently officiated matches involving Cerezo Osaka and Grampus.
Which cities has Koki Yasukawa officiated in most?▾
Koki Yasukawa has officiated most often in Toyota, with Toyota Stadium (Japan) the most-visited stadium.
Organizer reviews
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<a href="https://www.referee.observer/referee/jpn/koki-yasukawa" title="Koki Yasukawa — referee statistics on Referee.Observer">Koki Yasukawa — referee profile & stats on Referee.Observer</a>Referee.Observer is built by a community of referees from open, public data sources — so some details may be out of date or wrong.