United claim top spot
Park Ji-sung's first-half header in a 1-0 win over Arsenal sent Manchester United two points clear at the Barclays Premier League summit.
The South Korean's effort was enough to secure a deserved victory over Arsenal, who failed to get their reward for handing 20-year-old goalkeeper Wojciech Szczesny his league debut.
In fact, Wayne Rooney wasted a golden chance to ease home nerves when he ballooned a penalty over 17 minutes from time.
Wojciech Szczesny thwarted Nani and also got solidly behind a 20-yard Rooney shot as the electric, early pace continued.
Arsenal had a very lucky escape midway through the half when Sebastien Squillaci's clearing header from Darren Fletcher's cross fell perfectly for Nani, whose first-time volley whistled wide.
United appealed for a penalty as Marouane Chamakh rather awkwardly got in the way of Nani's inswinging cross. Referee Howard Webb was unimpressed but TV replays suggested the Frenchman had been exceptionally lucky to get away without conceding a spot-kick.
United's opener came as Nani raced onto Rooney's nod down and shot down the right flank. Gael Clichy made a half-block but was unable to stop the ball bouncing into the box, where Park showed admirable technique to get a firm connection with his header. Szczesny was helpless as the ball looped over his head and into the corner.
Arsenal had Szczesny to thank for not falling 2-0 down as Rooney threaded an excellent return pass through a static Arsenal defence for Anderson. Though not a prolific goalscorer by any means, Anderson was favourite to find the net but Szczesny stood firm.
Within seconds the Gunners were threatening as Edwin Van der Sar failed to hold Samir Nasri's 20-yard shot. Chamakh got to the rebound first but Vidic stuck out a leg to block the goalbound shot.
Rooney should have put the contest out of sight when Clichy slid in on Nani and conceded a penalty for handball. Not on this occasion, though, as he scooped way over the bar.