Rooney hat trick helps Man United rout Arsenal 8-2

Manchester United handed Arsenal its heaviest loss under Arsene Wenger on Sunday with Wayne Rooney scoring a hat trick in a humiliating 8-2 drubbing in the Premier League that only compounded the London clubs early-season troubles.Having seen cross-city rival Manchester City thrash Tottenham 5-1 earlier in the day, United responded in style with Ashley Young, Danny Welbeck, Nani and Park Ji-sung joining Rooney on the scoresheet.Rooney converted two free-kicks and a penalty to pass 150 goals in the Premier League with the sixth hat trick of his United career as his side moved to the top of the Premier League with a 100 percent record, ahead of City on goal difference.It was a good win for Manchester City but we had to concentrate on our own performance and it was something, Rooney said. I dont think any team are going to score eight against Arsenal again.Theo Walcott and Robin van Persie replied for a makeshift Arsenal side, while Van Persie had a penalty saved in the first half when Arsenal was trailing 1-0.Arsenal conceded eight goals in a league game for the first time since 1896, and for the first time ever in the top flight.