Greek champions Olympiakos have beaten ailing English giants Manchester United 2-0 in their Champions League last 16 first leg match in Piraeus.

Manchester United had been just one of three teams coming into the knockout stages not to have lost thusfar in this season’s competition but goals from veteran Alejandro Dominguez and a stunning curling effort by Costa Rican Joel Campbell — on loan from Arsenal — ended that record on Tuesday.

United can take heart ahead of next month’s second leg that they have won 13 of their last 15 home games in the knockout stages of the competition although their last defeat was at this stage last year to Real Madrid.