Bayern Munich left it late against Roma but ultimately prevailed 2-0 thanks to goals from Thomas Muller and Miroslav Klose. It required a moment of magic from World Cup star Muller on 78 minutes to set Bayern on their way to success, as the German's sublime volley with the outside of his boot flew into the top corner. Klose showed his predatory instincts to nip in ahead of goalkeeper Julio Sergio for Bayern's second and leave Roma with too much to do.

Romanian minnows CFR Cluj caused a sensation when they beat Roma in their first ever Champions League game a couple of years ago and they once again got off to a flyer with a 2-1 victory over Basel in Group E's second match. The damage was done inside the opening 12 minutes as headers from Ionut Rada and the giant Lacina Traore put Cluj firmly in control. Valentin Stocker nodded in an Alexander Frei corner on the stroke of half-time to reduce Basel's arrears, but the Swiss side could not find an equalizer.

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. Andrei 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.

Shakhtar Donetsk earned a hard-fought 1-0 success against Partizan Belgrade to join Arsenal on three points at the top of Group H. Shakhtar bossed long periods of the game in Ukraine without carving out many chances, but they finally edged in front after 71 minutes when Darijo Srna dipped a free-kick over the wall to deceive former Wigan goalkeeper Vladimir Stojkovic at his near post.

Chelsea enjoyed a resounding success against MSK Zilina 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 after a slide rule pass from Yossi Benayoun to complete a comfortable night for the Premier League champions.

In the other game in Group F, Spartak Moscow beat Marseille 1-0 in France courtesy of a late own goal from Cesar Azpilicueta. Azpilicueta inadvertently deflected the ball into his own net with just nine minutes remaining to give the Russians a potentially vital victory at the end of an evenly-matched encounter

Jose Mourinho began his quest to claim the trophy with a third different club in winning fashion as Real Madrid overcame Ajax 2-0 at the Santiago Bernabeu. The breakthrough came just after half an hour when Gonzalo Higuain helped bundle a Xabi Alonso corner over the line. Real continued to dominate but did not have a decisive lead until Higuain struck again from close range after Mesut Ozil's initial shot had been saved.

AC Milan have been mentioned as possible dark horses after some eye-catching signings in the transfer market, and will certainly be expected to advance alongside Real from Group G. It was new arrival Zlatan Ibrahimovic who made the difference in a 2-0 triumph against Auxerre at the San Siro. There was nothing to choose between the sides until deep into the second half as Auxerre battled hard, but Swedish striker Ibrahimovic tapped in an opener and then curled home another to make the points safe.