Shaqiri - Don't write off Ronaldo

Cristiano Ronaldo may be 37 and without a club but Switzerland's Xherdan Shaqiri, whose team face Portugal in the World Cup last 16 on Tuesday, says it would be a mistake to consider him a fading force.

"You cannot write off Cristiano, he is one of the best players in the world together with (Lionel) Messi," Shaqiri told reporters after training on Sunday.

"This guy can score any second, any minute, he has experience and everyone knows how important he is for Portugal and for his team," added the former Liverpool and Bayern Munich attacker, who scored in Switzerland's 3-2 win over Serbia on Friday which secured them a place in the knockout stage.

Ronaldo, who has been released by Manchester United after his controversial television interview, has scored once so far in this tournament, with a penalty in the opening group stage 3-2 win over Ghana.

But Shaqiri, who now plays in Major League Soccer with Chicago Fire, knows that regardless of Ronaldo's threat there are also plenty of other sources of danger from Portugal.

"We have to know also the other players because it is not only Ronaldo, they have very good players, young players who can make a big difference and we need to give really a very good performance because its knockout and anything can happen in the 95-100 minutes and we are looking forward to it," he said.

While Shaqiri is established as the main creative force in the Swiss side, he says the key to their chances of success is found in their ability as a collective.

"The key is to have a special performance from the whole team. There are no Cristianos in our team, we need to have the whole team to be successful. If everyone sticks together, everyone goes to their highest level of performance, I am sure we have a