Arsenal recorded their first away victory of the season, defeating high-flying Wigan Athletic 3-2.
All five goals came in the first half, the Gunners opening the scoring on 11 minutes when Robin van Persie's shot squirmed under John Filan.
Thierry Henry then coolly slotted into the corner to double the visitors' lead.
Wigan hit back through Henri Camara's diving header, but Henry pulled Arsenal clear again with a trademark free-kick.
Jimmy Bullard scored with a curling shot into the corner on the stroke of half-time but Wigan could not get back on level terms, as the Latics' impressive six-match winning run ended.
The result left Wigan second on 25 points, nine points behind leaders Chelsea, while Arsenal moved up to fourth on 23 points.
Heidar Helguson scored twice as Queens Park Rangers came from behind to beat Stoke City.
The Potters took an eighth-minute lead when Jonathan Walters fired in from the edge of the box, but QPR levelled when Helguson headed home unmarked.
Luke Young made it 2-1 on the stroke of half-time for the visitors, before Helguson added his second from close range on 54 minutes.
Ryan Shawcross pulled a goal back for Stoke, but Neil Warnock's QPR held on.
Victory moved QPR up to ninth on 15 points. Stoke were 14th with 12 points, leaving Tony Pulis's side three points above the bottom three.