Yas Yamamoto
1980
- BC Winter Game (Kimberly) Kata
1982
- BC Winter Game (Trail) Kata
1983
- BC Championship (spring) Kata
- BC Championship (fall) Kata
- Western Canadian Championship (Winnipeg) Kumite light weight
1984
- BC Winter Game (Fort St. John) Kata
- BC Championship (spring) Kata
- National (Calgary) Kata
- Team Kata ( ) Scott Cheung , Yas Ymamoto. Raymond So
- Western Canadian Championship (Edmonton) Kumite light weight, Kata, Team kumite
- 1985 BC Championship (spring) Kata
- National (St. John) Kata
- Common Wealth (Guernsey England) Kata
1986
- BC Championship (spring) Kata
- National (Toronto) Kata
1987
- BC Championship (spring) Kata