Spain vs Portugal live streaming, Euro 2012 scores & highlights
View slideshow: Spain vs Portugal Euro 2012 highlights - photos
Istream is streaming the Euro 2012 matches live. The online streaming can be watched here at 18:45 GMT.
Spain lead the overall head-to-head by 16 wins to six. Watch highlights videos.
Portugal striker Helder Postiga is ruled out with a thigh injury, meaning coach Paulo Bento will be unable to name an unchanged side for a fifth successive match.
Spain may have been accused of playing boring football throughout the tournament, but it's served them well so far. They punched their ticket into the semis by knocking off France, 2-0, in the quarterfinal. Watch highlights videos.
The Portuguese have lost four of their five previous semi-finals at major tournaments, and have never won at this stage overseas.
According to Opta, Spain have completed 2,623 passes at Euro 2012, more than twice as many as Portugal (1,159). Click here to watch Watch highlights videos.