Ryosuke Yamaoka
4️⃣Japan fourth official · 1 competition
Ryosuke Yamaoka is a Japan football fourth official. They have officiated as fourth official. In total they have 3 tracked match appearances across 1 competition, broken down as 3× 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 | 3 | 3 |
Career Milestones
Career-firsts tracked in our database.
Match Activity
3 matches · 1 yearPeer Benchmark
Median in Japan: 10 matches · 1 season
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 · 36 in leagueNever
- 2Takafumi MikuriyaReferee · 36 in leagueNever
- 3Hiroyuki KimuraReferee · 36 in leagueNever
- 4Koichiro FukushimaReferee · 32 in leagueNever
- 5Masuya UedaReferee · 32 in leagueNever
- 6Kōei KoyaReferee · 30 in leagueNever
- 7Atsushi KamimuraReferee · 29 in leagueNever
- 8Hayato ShimizuReferee · 28 in leagueNever
Explore the full officiating network — partnerships, observers, clubs and venues — on the network analysis page.
Top Destinations
- 1Saitama1×
- 2Kashiwa1×
- 3Kawasaki1×
Venues Visited(3)
Stadiums Ryosuke Yamaoka has officiated at. Filter by competition or season to focus the map.
3 venues · 3 matches
Saitama Stadium 2002Saitama1 match
Sankyo Frontier Kashiwa StadiumKashiwa1 match
Uvance Todoroki Stadium by FujitsuKawasaki1 match
Frequently Asked Questions
What is Ryosuke Yamaoka's primary role?▾
Ryosuke Yamaoka is a Japan football fourth official.
How many matches has Ryosuke Yamaoka officiated?▾
Ryosuke Yamaoka has 3 tracked match appearances across 1 competition (3× 4th Official).
Which competitions does Ryosuke Yamaoka work in?▾
Ryosuke Yamaoka has most often officiated in J1 League.
Is Ryosuke Yamaoka a FIFA referee?▾
Ryosuke Yamaoka is not currently recorded as a FIFA badge holder in our data.
Which teams has Ryosuke Yamaoka officiated most?▾
Among domestic clubs, Ryosuke Yamaoka has most frequently officiated matches involving Urawa Reds, Kashiwa Reysol and Kyoto Sanga.
Which cities has Ryosuke Yamaoka officiated in most?▾
Ryosuke Yamaoka has officiated most often in Saitama, Kashiwa and Kawasaki, with Saitama Stadium 2002 the most-visited stadium.
Organizer reviews
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<a href="https://www.referee.observer/referee/jpn/ryosuke-yamaoka" title="Ryosuke Yamaoka — referee statistics on Referee.Observer">Ryosuke Yamaoka — 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.