PIRAEUS, Greece (AP) — Manchester United's troubled season took another turn for the worse on Tuesday as David Moyes' side slumped to a 2-0 first leg defeat to Olympiakos in the last 16 of the Champions League.
Moyes described the match as "the worst performance in Europe" he'd seen from his players, and took full responsibility for the result.
Argentine striker Alejandro Dominguez broke the deadlock at Karaiskaki Stadium when he got his foot to a shot from Yiannis Maniatis in the 38th minute and turned the ball past goalkeeper David de Gea.
First-half composure from the visitors soon turned to complacency after the break when striker Joel Campbell, on loan from United's Premier League rival Arsenal, caught De Gea off guard with a well-placed shot in the 55th minute.
Wayne Rooney produced no threat up front and strike partner Robin van Persie missed the visitors' only clear chance — a shot over the crossbar in the 82nd minute — as United slipped to its first defeat in the Champions League this season.
"It was a very poor performance, and we didn't deserve to get anything. To a man there was nothing," Moyes said.
"I'm just surprised. I just didn't see that level of performance coming. We didn't offer enough on the night to create any goals."
Olympiakos coach Michel Gonzalez played down the implications of the result, saying that 2-0 wasn't a big enough margin to give an advantage in terms of qualifying.