Yuichiro Koyama
Bonsai Jiu-jitsu Japan
Japan 
Age 52      Belt BLUE
MALE BLUE MASTER 4
Points
0.50
Gold
0
Silver
0
Bronze
1
Sjjif World Accumulative Rank
Ranking
107
Rank Points Gold Silver Bronze
Sjjif World Rank 2022 0.5 0 0 1
tokyo winter jiu jitsu championship 2021 male blue master 4 light BRONZ