Chelsea beat Arsenal 2-0 to stay ahead of Manchester United in the race for the Premier League title.
Didier Drogba scored twice in the first 23 minutes on Sunday to establish a dominance that Arsenal was unable to overturn despite an improved second-half performance.
Victory lifted the Blues to 58 points, two more than defending champion United and nine more than third-place Arsenal.
After losing 3-1 to United last weekend, Arsenal was desperate for victory at Stamford Bridge but now faces a tough challenge to close on the leading pair with just 13 games remaining.
Chelsea captain John Terry started the game two days after being stripped of the England captaincy and set up the first goal in the eighth minute.
But the defender could be a doubt for Wednesday’s match at Everton after receiving treatment to his left thigh midway through the second half, only returning to the game with his leg heavily strapped.
Terry made the opening goal when he rose to meet a corner and headed the ball to the far post, where Drogba tapped it in from close range.
The second goal came from the sort of counterattack more usually seen from Arsenal or Manchester United.
Chelsea won possession on the edge of its own area and Frank Lampard carried the ball up the middle of the field against a retreating defense.