| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
2008 Summer Olympics
|
Hockey |
 NED |
|
|
|
Roel van Eert |
|
|
Hockey, Men
(Olympic)
|
|
Final Round |
Great Britain — Republic of Korea |
Umpire 2 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Spain — Belgium |
Umpire 2 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group B |
Australia — South Africa |
Umpire 2 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group B |
Canada — Great Britain |
Umpire 1 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group B |
Canada — South Africa |
Umpire 1 |
|
|
|
2012 Summer Olympics
|
Hockey |
NED |
|
|
|
Roel van Eert |
|
|
Hockey, Men
(Olympic)
|
|
Final Round |
Belgium — Spain |
Umpire 1 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Australia — South Africa |
Umpire 1 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
South Africa — Great Britain |
Umpire 2 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group B |
New Zealand — Belgium |
Umpire 1 |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Great Britain — Argentina |
Reserve |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Australia — Argentina |
Reserve |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Australia — Pakistan |
Reserve |
|
|
|
Hockey, Men
(Olympic)
|
|
Group A |
Spain — Great Britain |
Reserve |
|
|