"Today was a good result, a much needed result after last week," Rooney told Sky Sports News. "The win on Wednesday night against Olympiacos has given us all a big lift. I think you could see today, the confidence running through the team so it's a good victory and we're really pleased with that.
"The Olympiacos result was massive for us in terms of picking the fans up, picking ourselves up, after the defeat to Liverpool and today we played some lovely football.
"I'm a bit disappointed we didn't take a few more chances to make the game a bit easier but overall we played some good stuff, we defended excellently."
David Moyes's side are back in action on Tuesday night when they face local rivals Manchester City.