Manchester - Manchester United will take a narrow advantage into the second leg of their Champions League semi-final against Arsenal after edging out the London side 1-0 at Old Trafford on Wednesday.
The holders dominated the match for long periods but in the end only had an early strike from John O'Shea to show for their superiority.
"We had so many chances in the first half but their goalkeeper played so well," United goalkeeper Edwin van der Sar said. "I think our game plan was good.