Serbia manager Sinisa Mihajlovic has said that he was pleased with his side's performance in the 6-1 drubbing of Wales but admitted that they must keep working hard to improve.

Mihajlovic said that the blend of youth and experience worked well against the Welsh but refused to get carried away with the result.

"This is a young team and if their enthusiasm can blend in with the experience of the senior players, we have a good chance of going through to the World Cup finals," Mihajlovic said.

"We had the boldness we lacked against the Scots and the early goal was crucial in taking the pressure off but we have to keep our feet on the ground and keep working hard in order to improve."

Serbia are one of three teams on four points in Group A.