(Adds Man Utd game)
Chelsea recovered from a first-half scare to maintain their five-point lead at the top of the Barclays Premier League with a 2-1 win at Blackburn.
The Blues were shocked by Benjani Mwaruwari's first of the season before Nicolas Anelka beat Paul Robinson after Didier Drogba's knock down to level the scores.
Blackburn were then made to pay for missing a golden chance through Mame Biram Diouf when Branislav Ivanovic nodded home at the far post to seal the champions' third away victory of the season.
Manchester United moved level on points with second-placed Arsenal after a 2-0 victory against Tottenham in the evening kick-off at Old Trafford.
Nemanja Vidic nodded United ahead with his second of the season before Nani put United 2-0 up with a controversial goal that left Spurs fuming.
Referee Mark Clattenburg looked to have given a free-kick against the winger after he handled the ball when he went down in the box.
The ball ran on to Heurelho Gomes, who placed the ball down for what he thought was a free-kick but Clattenburg had not blown his whistle, which allowed the Portuguese to tap home unchallenged.
Despite Spurs' protests, the goal stood and United moved three points clear of local rivals Manchester City.
Earlier in the day, City were stunned by a shock 2-1 defeat against strugglers Wolves at Molineux.
Fourth-placed City, who lost 3-0 against Arsenal last week, opened the scoring with Emmanuel Adebayor's first of the season from the penalty spot after Richard Stearman fouled David Silva.
Nenad Milijas scored his third of the season to pull Mick McCarthy's men level before David Edwards gave the 19th-placed side the win with a 57th-minute strike.
Alex Song's header in the dying minutes gave Arsenal a 1-0 victory over rock-bottom West Ham at the Emirates Stadium.
A great performance from Robert Green, who kept out Song and Cesc Fabregas with two athletic first-half saves, ensured that the game remained goalless until the 88th minute when Song nodded home Gael Clichy's cross to keep Arsenal in touch with the leaders.
Everton stretched their unbeaten run to five matches thanks to Ayegbeni Yakubu's first goal of the season in a 1-0 win over Stoke at Goodison Park.
The Nigerian picked up the ball from Tim Cahill after the Australian's shot had rebounded off the post before beating Asmir Begovic to condemn Stoke to their fourth straight defeat.
Fulham were catapulted eight places to eighth with a 2-0 win over Wolves thanks to a Clint Dempsey double.
Dempsey headed past Ali Al Habsi to put Mark Hughes' side in front before the American latched onto Zoltan Gera's cross to double the Cottagers' advantage just before the break.