Argentina's striker Gonzalo Higuain (L, front) fights for the ball with Nigeria's defender Taye Taiwo (L, back) as Nigeria's goalkeeper Vincent Enyeama. AFP PHOTO / ROBERTO SCHMIDT

Nigeria coach Lars Lagerback said Wednesday the Super Eagles had been working on sharpening their cutting edge ahead of their must-win clash against Greece.”Despite the loss to Argentina we had a good week,” he told reporters.”The players have a really good attitude. Everything is OK in the camp so I’m really looking forward to the game.””What we have given priority to in training in the days after the Argentina game is to try to be a little bit sharper in the attacking part of the game,” Lagerback said.