Steve Rider presents live coverage of the quarter-final, first leg between Manchester United and FC Porto from Old Trafford. United are unbeaten in their last 21 Champions League games - a competition record - and it is four years since they lost a European match at the Theatre of Dreams. Porto have been Portuguese champions for the last three seasons and won this competition in 2004 under Jose Mourinho. With commentary by Clive Tyldesley and David Pleat, analysis from Andy Townsend, and pitchside reports from Gabriel Clarke.
