Ku Kam Fai was one of the members in the famous "5.19" match, when Hong Kong historically beat China by 2–1 in the 1986 FIFA World Cup Qualifying Round on 19 May 1985.
Ku Kam Fai played in the "5.19" match, which was a significant event in Hong Kong football history as they defeated China 2-1 on May 19, 1985, during the FIFA World Cup Qualifying Round.