| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
1992 Summer Olympics
|
Water Polo (Aquatics) |
 NED |
|
|
|
Wim Keman |
|
|
Water Polo, Men
(Olympic)
|
|
Match #3 |
Germany — Cuba |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #6 |
Unified Team — Germany |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #14 |
United States — Germany |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #12 |
Italy — Spain |
Referee |
|
|
|
1996 Summer Olympics
|
Water Polo (Aquatics) |
NED |
|
|
|
Wim Keman |
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Spain — Hungary |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #4 |
Russian Federation — Yugoslavia |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #14 |
Spain — Russian Federation |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #1 |
Croatia — Greece |
Referee |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #9 |
United States — Ukraine |
Referee |
|
|