“I can't put my finger on why we are not killing teams off,” Rooney explains. “We have scored plenty of goals - it is the most number of goals we have scored at this stage of the season.
“Maybe we are concerned with conceding goals, because we have conceded too many and have done throughout the season. But that is the way we are playing. That is the way we have been set up to play. We have to just keep our scoring going.
“Once you get an early goal the game settles down. We tend to win a lot more comfortably. When you go behind you end up fighting for the whole game. It can take a lot out of you as well. If you get an early goal it is great because you can see the game out without giving everything.”
Rooney was speaking to ManUtd.com, BBC Radio and Press Association.