| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
1956 Summer Olympics
|
Basketball (Basketball) |
 SGP |
|
|
|
Charlie Sien |
|
|
Basketball, Men
(Olympic)
|
|
Final Round |
Philippines — Chile |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Semi-Finals |
United States — Uruguay |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group B |
United States — Bulgaria |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group C |
Republic of China — Australia |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group A |
Japan — Thailand |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group C |
Bulgaria — Republic of Korea |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group D |
Brazil — Chile |
Referee |
|
|
|
1960 Summer Olympics
|
Basketball (Basketball) |
SGP |
|
|
|
Charlie Sien |
|
|
Basketball, Men
(Olympic)
|
|
Group B |
United States — Uruguay |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Classification Round 13-15 |
Puerto Rico — Spain |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group B |
Yugoslavia — Bulgaria |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group C |
Brazil — Mexico |
Referee |
|
|
|
1964 Summer Olympics
|
Basketball (Basketball) |
SGP |
|
|
|
Charlie Sien |
|
|
Basketball, Men
(Olympic)
|
|
Classification Round 9-12 |
Japan — Finland |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group A |
Poland — Japan |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group A |
Soviet Union — Hungary |
Referee |
|
|
|
Basketball, Men
(Olympic)
|
|
Group A |
Soviet Union — Japan |
Referee |
|
|