| U20 World Cup 1983 in Mexiko - Appearances as Assistant | ||||
| 05/06/1983 | Netherlands | - | Brazil | 1:1 |
| 10/06/1983 | USSR | - | Brazil | 1:2 |
| U20 World Cup 1983 in Mexiko - Appearances as Assistant | ||||
| 05/06/1983 | Netherlands | - | Brazil | 1:1 |
| 10/06/1983 | USSR | - | Brazil | 1:2 |
| Complete name: | Ivan Grégr |
| Born: | 21/05/1942 |
| Place of birth: |
Praha, 
CSSR |
| Residence: | Praha |
| Nationality: |
Czech Republic |
| Profession: | Mechaniker |
| Club: | Karriereende |