Y. Yamamoto
Home bias: +16.2pp home-win tilt vs away
179
Matches officiated
2.89
Yellow / game
0.112
Red / game
44.7%
Home-win %
28.5%
Away-win %
26.8%
Draw %
Public match-data aggregates over this official's recorded fixtures — outcome splits and cards per game, not SPX Quant Engine output.
Cards profile
Books 2.89 yellows per game — below the ~3.5/game public benchmark, a average card profile.
A plain-English strictness read from public cards-per-game totals vs a fixed reference benchmark — not SPX Quant Engine output.
Competitions officiated
J1 League
Japan
J2/J3 League
Japan
Liga 1
Indonesia
J-League Cup
Japan
Emperor Cup
Japan
AFC Champions League Two
World
Friendlies
World
Asian Cup - Qualification
World
AFC Challenge Cup
World
Asian Games
World
Friendlies Clubs
World
ASEAN Championship
World
Matches officiated per competition across this official's recorded fixtures.
Notable matches
Gamba Osaka vs Vissel Kobe
Emperor Cup · 2024-11-23
Albirex Niigata vs Kawasaki Frontale
J-League Cup · 2024-10-09
Kawasaki Frontale vs Ventforet Kofu
J-League Cup · 2024-09-04
Avispa Fukuoka vs FC Tokyo
J-League Cup · 2023-09-10
Nagoya Grampus vs Kashima
J-League Cup · 2023-09-06
Cerezo Osaka vs Sanfrecce Hiroshima
J-League Cup · 2022-10-22
World Cup fixtures and detected finals from this official's record.
Recent matches
Persita vs Persis Solo
Match · 2026-05-23
Persijap vs Pusamania Borneo
Match · 2026-05-17
Bhayangkara FC vs Persepam Madura Utd
Match · 2026-05-11
Persib Bandung vs PSIM Yogyakarta
Match · 2026-05-04
Persik Kediri vs Pusamania Borneo
Match · 2026-04-29
Persita vs Bali United
Match · 2026-04-23
Semen Padang vs Persijap
Match · 2026-04-20
PSM Makassar vs Persis Solo
Match · 2026-04-04