Chelsea are back on top of the Premier League table after second-half goals from Nicolas Anelka and Florent Malouda - both set up by Didier Drogba - secured a 2-0 win over Liverpool.
Chelsea, who are now two points clear of Manchester United at the summit, were good value for their victory. Liverpool, meanwhile, have now lost three of their first eight games this season having been beaten only twice in the whole of last season. No side has won the Premier League after such a start.
Arsenal twice had to come from behind against Blackburn before finally powering to a 6-2 victory.
Cesc Fabregas was the star for the Gunners, assisting four goals and scoring one himself.
Steven Nzonzi had nodded Rovers ahead in the fourth minute before Thomas Vermaelen smashed home an equaliser.
David Dunn's deflected effort put the visitors back in front, but Robin van Persie and Andrey Arshavin saw Arsenal lead 3-2 at the break.
Captain Fabregas got the goal his performance deserved just before the hour, and then helped set up substitute Walcott on 75 minutes with Nicklas Bendtner cracking in a sixth late on.
Junior Stanislas came off the bench to save West Ham's blushes and secure a 2-2 draw two minutes into injury time against 10-man Fulham.
The Hammers had been cruising at the interval after Carlton Cole's header earned them a deserved lead and Fulham had South African midfielder Kagisho Digikao sent off on his full debut.
Fulham hit back immediately after the interval with a penalty from Danny Murphy before Zoltan Gera's 57th-minute volley put them ahead.
Stanislas' deflected strike denied the Cottagers victory, but the point was still enough to take them out of the drop zone. West Ham stay 19th.
Robert Huth's first goal for his new club saw Stoke claim a hard-earned 1-1 draw against Everton at Goodison Park.
Huth's header five minutes after the break gave Stoke reward for a spirited, competitive performance.
Everton extended their unbeaten run to six games when stand-in skipper Leon Osman lashed home the equaliser from the edge of the box five minutes later.