Player to watch for the Spain
David Villa — The Spanish striker has been on fire in South Africa, scoring three goals and causing all sorts of problems for opposing defenders.

Player to watch for Portugal
Cristiano Ronaldo — The Portuguese winger has been a bit inconsistent at this competition, so he needs to step up in this crucial game and put forth a better effort for his country.

Key matchup
David Villa vs. Ricardo Carvalho — One of the best strikers in the world versus one of the best central defenders in the world. Can Villa run rampant like he did in the first round? Or will Carvalho shut him down?

The Spanish perspective
"Portugal are going to be a very tough side. I take no satisfaction from the fact we're up against Portugal instead of Brazil." — coach Vicente del Bosque

The Portuguese perspective
"Without showing them a lack of respect, we're not scared at all. We've got a great team, too. And to become better, we have to beat Spain. They're champions of Europe, but we have our own qualities." — winger Simao

World Cup head-to-head
These teams have never met at the World Cup.
---cbc