| U20 World Cup 1999 Nigeria - Appearances as Referee |  |
 |
 |
||||
| 07/04/1999 | Costa Rica | - | Paraguay | 1:3 | 7 | - | - |
| 10/04/1999 | Nigeria | - | Paraguay | 1:2 | 5 | - | 1 |
| U20 World Cup 1999 Nigeria - Appearances as Referee | |
|
|
||||
| 07/04/1999 | Costa Rica | - | Paraguay | 1:3 | 7 | - | - |
| 10/04/1999 | Nigeria | - | Paraguay | 1:2 | 5 | - | 1 |
| Complete name: | Jan Willem Wegereef |
| Born: | 17/01/1962 |
| Place of birth: |
Ryssen, 
Netherlands |
| Nationality: |
Netherlands |
| Height: | 184 cm |
| Weight: | 78 kg |