| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
2012 Summer Olympics
|
Water Polo (Aquatics) |
 GER |
|
|
|
Ulrich Spiegel |
|
|
Water Polo, Men
(Olympic)
|
|
Match 7/8 |
Australia — United States |
Referee #2 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #1 |
Montenegro — Spain |
Referee #2 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #2 |
Spain — Kazakhstan |
Referee #2 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #5 |
Australia — Kazakhstan |
Referee #2 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #9 |
Greece — Kazakhstan |
Referee #1 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #10 |
Croatia — Australia |
Referee #1 |
|
|
|
Water Polo, Men
(Olympic)
|
|
Match #13 |
Serbia — Romania |
Referee #1 |
|
|
|
Water Polo, Women
(Olympic)
|
|
Match #1 |
United States — Australia |
Referee #1 |
|
|