Defending champion Porto of Portugal has advanced to the next round of the Champions League football tournament with a 2-1 victory Tuesday over Chelsea of England.
German champion Werder Bremen also advanced with a 2-0 triumph over Valencia of Spain. Arsenal of England moves on with a 2-0 victory over Rosenborg of Norway.
On Wednesday, nine-time winner Real Madrid of Spain and four-time winner Liverpool both need a win to remain in contention. Monaco, last season's Champions League runner-up, needs at least a draw.
Nine clubs have already qualified for the next round -- Italy's Juventus, AC Milan and Inter Milan, England's Chelsea and Manchester United, Germany's Bayern Munich, French champion Lyon, Dutch club PSV Eindhoven and Barcelona of Spain.
Here are the Champions League scores from Tuesday.