Wales went down 59-7 to New Zealand in Johannesburg in the third-fourth match of the first IRB Under-21 World Cup.
South Africa defeated Australia 24-21 in the final, while favourites New Zealand had to be content with third place.
The only Welsh score came from Swansea full-back Gareth Swales, who crossed for a try that Cardiff fly half Nicky Robinson converted.
New Zealand scored eight tries, all converted, and an early penalty goal.
Carmarthen Quins are holding an exhibition to commemorate club players who fought in World War I. All welcome to the clubhouse on Friday afternoon to learn more about local history, or share any family anecdotes or artifacts.