| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
1948 Summer Olympics
|
Water Polo (Aquatics) |
 NED |
|
|
|
Arend Verhoeff |
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Hungary — France |
Goal Judge |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #1 |
Sweden — Egypt |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #1 |
Belgium — Sweden |
Goal Judge |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Argentina — Egypt |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Yugoslavia — Australia |
Goal Judge |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Hungary — Great Britain |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #3 |
France — Greece |
Goal Judge |
|
|