Greece manager Fernando Santos has insisted that he is not concerned by the lack of goals scored by his side at the World Cup.

Ahead of their last-16 tie with Costa Rica on Sunday, Santos has dismissed suggestions that they are relying on their defensive abilities despite the only goals of their campaign coming in Wednesday's Group C 2-1 win over Ivory Coast.

"We showed against Ivory Coast how well we can defend but also how good we can be in attack," the Greece boss told reporters.

"We created a lot of chances and we kept attacking until the end. Even when we conceded the 74th minute equaliser, we continued to attack."

Greece will face either Mexico or the Netherlands if they edge past Costa Rica.