Portugal forward Cristiano Ronaldo has insisted that his side are ready to face Sweden in the second leg of their World Cup playoff tie.

Ronaldo scored the winning goal in the first leg on Friday evening to give his side a one-goal advantage ahead of tonight's return match in Stockholm.

The Real Madrid winger has said that Portugal will need to be "fully focused" when they face Erik Hamren's team.

"Portugal have a small advantage, and we are expecting a very difficult game, but we are ready," BBC Sport quotes Ronaldo as saying.

"We will have to be fully focused. More than anything else, these players want to be in Brazil, so we will give our best to get there."

Portugal last failed to qualify for a major tournament when they were unable to reach the 1998 World Cup finals.