| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
1980 Summer Olympics
|
Hockey |
 SUI |
|
|
|
Ruth Tong-Trachsler |
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
India — Poland |
Umpire 1 |
|
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
Austria — Poland |
Umpire 2 |
|
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
Soviet Union — India |
Umpire 2 |
|
|
|
1984 Summer Olympics
|
Hockey |
SUI |
|
|
|
Ruth Tong-Trachsler |
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
Australia — West Germany |
Umpire 1 |
|
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
Netherlands — United States |
Umpire 2 |
|
|
|
Hockey, Women
(Olympic)
|
|
Round-Robin |
Netherlands — Australia |
Umpire 2 |
|
|
|
1988 Summer Olympics
|
Hockey |
SUI |
|
|
|
Ruth Tong-Trachsler |
|
|
Hockey, Women
(Olympic)
|
|
Final Round |
Netherlands — Great Britain |
Umpire 1 |
|
|
|
Hockey, Women
(Olympic)
|
|
Semi-Finals |
Republic of Korea — Great Britain |
Umpire 2 |
|
|
|
Hockey, Women
(Olympic)
|
|
Group A |
Netherlands — United States |
Umpire 2 |
|
|
|
Hockey, Women
(Olympic)
|
|
Group B |
Australia — Republic of Korea |
Umpire 2 |
|
|