London, April 11:

Manchester United and Chelsea advanced to the semi-finals of the Champions League on Tuesday. United routed AS Roma 7-1 in the second leg of the quarter-finals to advance 8-3 on aggregate. Chelsea came back from a goal down to edge Valencia 2-1 and advance 3-2 on aggregate. Michael Essien scored the decider for Chelsea in injury time.

Two-time champion United got two goals each from Michael Carrick and Cristiano Ronaldo, while Ryan Giggs played a part in four of the seven. Alan Smith, Wayne Rooney and Patrice Evra also scored for United, where fans fought with police outside the stadium before kickoff.

Carrick took a cross from Ronaldo in the 11th minute and sent a shot in to the top right corner. Smith scored the second in the 17th. Rooney made it 3-0 two minutes later, and Ronaldo dribbled into the center and shot the ball past Roma goalkeeper Alexander Doni in the 44th.

Ronaldo added his second goal in the 49th by tapping in a cross from Giggs, and Carrick got his second in the 60th off a cross from Gabriel Heinze. Evra added the final goal in the 81st, 12 minutes after Daniele De Rossi scored for Roma.

United is trying to repeat its 1999 performance, when it won the Champions League, the FA Cup and Premier League. This year, the English team leads the Premier League and is also in the semi-finals of the FA Cup.

Chelsea is looking to win four trophies. The two-time defending English champions already have won the League Cup and are also in the semi-finals of the FA Cup.

Fernando Morientes gave Valencia the lead in the 32nd, sliding to knock in a cross from Joaquin Sanchez. But Andriy Shevchenko equalized for Chelsea in the 52nd, scoring from close range after a free kick from Essien. Valencia also took the lead in the first leg last week at Stamford Bridge but had to settle for a 1-1 draw.