"...Both squads have injuries to overcome. U.S. striker
Jozy Altidore is out with a hamstring. Portugal's
Cristiano Ronaldo , one of the world's very best, has
a nagging knee injury, and no one is quite sure how
hobbled he will be..."
http://www.cbsnews.com/news/world-cup-2014-usa-propelled-by-ghana-win-faces-off-with-portugal/