Chelsea continued their amazing run against Tottenham with a 2-0 victory over their London rivals courtesy of a Frank Lampard brace.

The Blues are now unbeaten in 30 league contests against Spurs - having not lost to the White Hart Lane outfit since 1990 when Nico Claesen scored.

The visitors broke the deadlock from the penalty spot just before the break when Lampard netted from 12 yards before he added a second in the closing stages of the contest.

Tottenham began in confident fashion, but the first chance fell to Damien Duff though Ledley King was perfectly placed to block his shot from close range.

The Blues seemed to content to hit Spurs on the counter-attack and that almost paid dividends when Didier Drogba clipped the ball over the onrushing Paul Robinson, however, the effort bounced into the side-netting.

In-form Jermain Defoe forced Petr Cech into a fine save after collecting the ball down the left before cutting onto his right foot and unleashing a shot on goal.

Duff was inches from giving Chelsea the lead on the half hour mark, but Robinson flung himself to his left to push wide the former Blackburn star's shot from the edge of the box.

The game erupted shortly after when Alexei Smertin went down in the area under a challenge from King that resulted in referee Graham Poll pointing to the penalty spot.

After Spurs' appeals were waived away Frank Lampard stepped up to give the visitors a lead they just about deserved based on their first half play.

Robben could have made it two before the interval but after being played in by Drogba down the right he scuffed his shot with his weaker right foot.

Keane felt he might have won a spot kick for the home side after he went down under a challenge from William Gallas in the box, but nothing was given.

Drogba was having chances to hit Spurs on the break, however, the big-money capture was often lacking confidence and conviction in front of goal.

Smertin almost got Spurs back in the game when he inadvertently redirected Defoe's whipped-in left wing corner just wide of his own post.

Spurs boss Martin Jol opted to change things around with King moving up front to add some aerial threat with Anthony Gardner filling in at the back.

Both managers brought players off the bench, but in truth the complexion of the game never changed with Chelsea keeping Tottenham at bay with ease.

In a game of players going down in the box Robben thought he might had had a penalty, however, he appeared to catch his own heel and was not fouled by Michael Brown.

With virtually the last kick of the game Lampard wrapped up the points when he latched onto Eidur Gudjohnsen's cut back to drill home from the edge of the box.

Spurs were all over the place at this stage and Gudjohnsen broke away again and almost got a third, which would have been hard on the home side.

Chelsea were not at their fluent best at The Lane, but did enough to get a result with the win keeping them well clear at the top of The Premiership.