Theo Walcott struck two quick goals to see off Spurs
Arsenal 5-2 Tottenham Hotspur
Arsenal staged a remarkable comeback as they recovered from 2-0 down to thump their north London rivals in a cracking match at the Emirates.
Louis Saha fired Spurs ahead in the opening minutes, then Emmanuel Adebayor scored against his former club from the penalty spot after Gareth Bale was fouled.
But Bacary Sagna headed in on 40 minutes before Robin van Persie curled in a spectacular effort from 20 yards to bring Arsenal level at half-time.
Tomas Rosicky slotted in to put Arsenal ahead, then Theo Walcott struck twice from inside the box inside three minutes to complete a superb comeback win.
Spurs' bad afternoon got even worse late on as Scott Parker was sent off for picking up a second yellow card.
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Norwich City 1-2 Manchester United
Ryan Giggs celebrated his 900th Manchester United appearance with a dramatic injury-time winner as Manchester United snatched a vital victory at Norwich.
The win moved them within two points of neighbours and Barclays Premier League leaders Manchester City.
United were on course for the victory thanks to Paul Scholes' header in the seventh minute but - after Giggs hit the bar for United - Grant Holt's smart equaliser with seven minutes to go looked set to thwart the visitors.
However, Welsh winger Giggs ghosted in at the far post to slot in from Ashley Young's cross in the dying seconds to earn victory.
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