The Fiji under-20 rugby side suffered a blow in their build up to the IRB Junior World Championship in Wales next month.

One of their top players, Flyhalf Alex Rokobaro was injured after the side's 12-51 loss to the Australian Juniors last night in Sydney.

Fiji team coach Rayne Simpson said his hopeful that Rokobaro will recover in time for the championship because the injury is not too serious.

Simpson said despite the big loss, his happy with the team's performance and said for the next few days he will try to improve on their defense which was seen as a weakness.

Fiji will now play the North Colts in their second build-up match on Wednesday.