Cesc Fabregas and Carlos Vela each scored twice as Arsenal kicked off their latest Champions League campaign in emphatic fashion with a 6-0 hammering of Braga at the Emirates Stadium.
Fabregas' ninth-minute penalty set the tone of a thoroughly one-sided affair on a big night for English clubs, with the Gunners' Barclays Premier League rivals Chelsea also routing Zilina in Slovakia.
Andrey Arshavin and Jack Wilshere put Arsene Wenger's men out of sight by half-time and after Fabregas' second it was left to the man who replaced him, Vela, to round off the victory.
Chelsea enjoyed a similarly resounding success in Slovakia with Nicolas Anelka's double steering Carlo Ancelotti's men home to a 4-1 win.
Michael Essien had opened the scoring after 13 minutes and Daniel Sturridge swept home the Blues' fourth.
Jose Mourinho's Real Madrid eased to a 2-0 win over Ajax at the Bernabeu but they were made to work for their victory which came via a goal in each half from Gonzalo Higuain.
Also in Group G, former winners AC Milan were pushed by French underdogs Auxerre before recent signing Zlatan Ibrahimovic showed his worth with a pair of goals to secure a 2-0 win for the Italians.
Bayern Munich left it late to see off Roma in Group E, with Thomas Muller's brilliant 78th-minute volley breaking the deadlock for the Germans and then a close-range effort from Miroslav Klose sealing the points.
Also in Group E, Romanians CFR Cluj got off to a winning start, with Ionut Rada and Lacina Traore scoring early in a 2-1 win over Swiss side Basle, for whom Valentin Stocker's 44th-minute header was not enough.
In Arsenal's Group H, Shakhtar Donetsk beat Partizan Belgrade 1-0 with a goal from Darijo Srna, while in Group F Spartak Moscow joined Chelsea on three points with Cesar Azpilicueta's late own goal enough for a 1-0 win over Marseille.
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