 Their first appearance came at the 1979 tournament, where they were knocked out in the group stage after two defeats (0–2 against Poland and 0–1 against Argentina) and one win (5–0 against Indonesia).Their second appearance in the 1987 tournament was much more successful, as they won the competition, remarkably defeating each of the three other semi-finalists and eliminating the defending champions Brazil during the course of the tournament, with Robert Prosinečki winning the Golden Ball award for Best Player of the tournament.FR Yugoslavia/Serbia and Montenegro under-20 team did not qualify for World Youth Championships.