LONDON, Feb 25: Favourites Barcelona recovered their poise to grab a valuable 1-1 draw at Olympique Lyon on Tuesday but holders Manchester United were frustrated on their Champions League return in a 0-0 draw at Inter Milan.

Barcelona, whose commanding form has deserted them of late, fell behind to a free kick from Juninho and needed a Thierry Henry header in the second half to take a slight edge from the first leg of their last-16 tie thanks to the away goal.

Cristiano Ronaldo went close for United early and late at the San Siro but Alex Ferguson had to settle for extending their unbeaten run in the Champions League to a record 20 matches.

In the night’s other Anglo-Italian clash, Arsenal clinched a 1-0 win at home to AS Roma thanks to a Robin van Persie penalty, making them the night’s only winning team.

The other tie was left well poised, as Porto twice came from behind to snatch a 2-2 draw away to Atletico Madrid.

Results (last 16, first leg):

Arsenal 1 AS Roma 0

Atletico Madrid 2 Porto 2

Inter Milan 0 Manchester United 0

Olympique Lyon 1 Barcelona 1

—Reuters