Serbia defender Aleksandar Lukovic insists his side will be back to their defensive best for Sunday's 2010 FIFA World Cup South Africa clash against Ghana, despite having leaked three goals last time out. Plavi twice came from behind to seal a 4-3 friendly win over Cameroon in Belgrade last Saturday, but Udinese left-back Lukovic believes Ghana will be much tighter at the back for their opening game.

"We didn't lose any confidence against Cameroon, our defence remains one of the strongest parts of our game," said Lukovic, who will be joined by Manchester United's Nemanja Vidic and Chelsea's Branislav Ivanovic in the Serb defence.

"All of the team works hard in defence, we were maybe a bit naive in conceding three goals to Cameroon, but it was only a farewell match before we went to the World Cup. I truly believe everything will be fine for our first game against Ghana."

I truly believe everything will be fine for our first game against Ghana.

Aleksandar Lukovic, Serbia defender

Lukovic's fellow defender Aleksandar Kolarov of Lazio insists all the sides in Group D are well-matched. "It is a strong group, but the teams are mostly equal," said the 24-year-old. "Maybe Germany have a slight advantage, but they will be just as hard to beat as Ghana. They have a tough match against Australia and I think the group is fairly equal."

The Serbs will be appearing in the FIFA World Cup finals for the first time as an independent nation after finishing top of their qualifying group. Serbia will face three-times FIFA World Cup™ winners Germany in their second Group D match, on 18 June in Port Elizabeth before taking on Australia in Nelspruit on 23 June.