Robin van Persie had reason to celebrate on Sunday

The win saw Arsenal leapfrog 跳越 Manchester United who had taken the top slot after thrashing 痛击 Wigan 4-0 on Saturday.

Arsenal’s Dutch striker 前锋 Robin van Persie continued his goal-scoring streak, with two goals on Sunday to add to his Champion’s League 欧锦赛 goal in Bucharest, Romania on Wednesday.

Mental focus  After 15 minutes, the game looked to be easy and maybe we convinced ourselves of that as well.   Arsene Wenger, Arsenal manager

The game seemed to be wrapped up 大局已定 after the first quarter of an hour as first van Persie scored with a blistering free-kick 惊人的任意球, and then Senderos made it two with his head.

But Arsenal were mistaken to think that Sunderland would simply roll over for them 屈服于他们.

Roy Keane’s men were determined to make Wenger’s Arsenal pay for any complacency 自满情绪, and after 25 minutes a goalkeeping fumble 失手by the Arsenal keeper allowed Sunderland to score.

Arsenal manager Arsene Wenger admitted that his team were nearly guilty of underestimating the opposition 低估了对方.

"After 15 minutes, the game looked to be easy," said Wenger.

"Part of our mental focus 大脑注意力 went and when you do that at this level, you pay for it," he added, meaning that when a team’s concentration is lowered, they can make mistakes.

Luck  The lads gave it their all, but you need a hell of a lot of luck to get positive results at these grounds. We had a bit, but not enough.   Roy Keane, Sunderland manager

Sunderland proved him to be correct when they scored again early in the second half.

But Arsenal were able to step up a gear 加挡提速 and continue attacking. Their efforts were rewarded 努力得以回报 in the 80th minute when van Persie scored his second from Theo Walcott’s pass.

Sunderland manager Roy Keane, famed for his fiery temper 火爆脾气, seemed almost philosophical in defeat, saying you need a "lot of luck to get positive results at these grounds".

"We had a bit, but not enough," he added.