Chelsea secured a top three Premier League finish and entry into next season's Champions League group stages with a comprehensive win at Arsenal.
Alex powerfully headed Chelsea in front and Nicolas Anelka thundered in a 25-yard strike to dobule Chelsea's lead.
Arsenal's Kolo Toure put Ashley Cole's cross into his own net before a Nicklas Bendtner header pulled it back to 3-1.
The Gunners rallied but Chelsea wrapped up the win when Florent Malouda slotted in after Anelka's shot hit the post.
Arsenal will now be left to negotiate an open draw qualification for next season's Champions League, which could potentially pit them against a team from the German, Spanish or Italian leagues.
Both teams were coming off the back of elimination from this season's competition in midweek and, while the win will provide some consolation for Chelsea, Arsenal's misery will only be compounded by the loss.It was a defeat that seemed unlikely when Arsenal burst out of the blocks and seemed set to score as they swarmed all over Chelsea.
Arsenal: Fabianski, Sagna, Toure, Silvestre, Gibbs, Walcott (Adebayor 68), Nasri, Song Billong (Denilson 67), Diaby (Bendtner 59), Fabregas, Van Persie.
Subs Not Used: Mannone, Ramsey, Djourou, Eboue.
Booked: Fabregas.
Goals: Bendtner 70.
Chelsea: Cech, Bosingwa (Ivanovic 77), Alex, Terry, Ashley Cole, Essien, Mikel, Lampard, Anelka, Drogba, Malouda (Ballack 88).
Subs Not Used: Hilario, Di Santo, Kalou, Belletti, Mancienne.
Goals: Alex 28, Anelka 39, Toure 49 og, Malouda 86.
Att: 60,075
Ref: Phil Dowd (Staffordshire).
www.bbc.co.uk