Hamburg - Real Madrid powered to a 3-0 win over Zenit St Petersburg under new coach Juande Ramos while Bayern Munich and Porto also enjoyed victories in the Champions League on Wednesday.

European champions Manchester United were meanwhile held 2-2 by Danish visitors Aalborg, while Fiorentina and Dynamo Kiev clinched narrow wins to go into the UEFA Cup.

Real's win, a day after Ramos was appointed to replace the sacked Bernd Schuster, was not enough to overtake Juventus at the top of Group H where the Serie A side played out a goalless draw at BATE Borisov.

However, Manchester United held on to top spot in Group E ahead of Spain's Villareal who slipped to a 2-0 defeat at Scotland's Celtic.

Elsewhere, victories for Bayern Munich, who edged Olympique Lyon 3-2, and Porto, who downed Arsenal 2-0, ensured they both finished group winners.

With qualification places already taken for the last-16 knockout stage, the evening's action focused on the final group placings and the two UEFA Cup places still at stake for third-placed teams.

Italy's Fiorentina clinched third spot behind Bayern Munich and Lyon in Group F thanks to a 1-0 win at Steaua Bucharest, while Dynamo Kiev were 1-0 winners over Fenerbahce for third place in Group G.

At Old Trafford, Cristiano Ronaldo paraded the Ballon d'Or trophy before Manchester United's Champions League tie against Aalborg.

The Portuguese international, who missed the match with a hip injury, then saw United get off to a brisk start when Carlos Tevez netted in the third minute.

But Sir Alex Ferguson's much-changed side went into half-time 2-1 down after Michael Jakobsen levelled in the 32nd minute and Jeppe Curth added a second just before the break.

Wayne Rooney got United on level terms seven minutes after the interval but the Danish outfit - already assured of a UEFA Cup place - held on for the draw.

Spain's Villareal failed to take advantage, slipping 2-0 at Celtic who scored first-half goals from Shaun Maloney in the 14th minute and Aiden McGeady seconds before the interval.

Fellow Premier League side Arsenal went down 2-0 at Porto who leapfrogged the Gunners to finish top of Group G.

Arsene Wenger, in his 700th game in charge, saw his youthful line-up concede defeat to a 38th-minute header from a corner from Bruno Alves and a 54th-minute strike from Lisandro Lopez to leave Porto on 12 points to Arsenal's 11.

Dynamo Kiev clinched third place by beating Fenerbahce, courtesy of a 24th-minute goal from Roman Eremenko, to end on eight points.

Ramos got off to a perfect start in charge of Real Madrid as the Spanish champions downed Zenit St Petersburg 3-0.

Raul scored in each half either side of an Arjen Robben goal to put Real level on 12 points with Juventus who were held 0-0 by BATE Borisov but win Group H on the head-to-head rule.

Raul converted from close range in the 25th minute after keeper Vyacheslav Malafeev dropped a cross, and Robben cleverly lobbed the keeper five minutes after the break to increase the lead.

The Dutch winger then provided the pass to Raul who finished with a similar chipped shot over Malafeev seven minutes later.

Miroslav Klose bagged a brace and France midfielder Franck Ribery was also on target as German champions Bayern Munich bagged a 3-2 win at Olympique Lyon to claim top spot in Group F.

Bayern were in charge after goals from Klose in the 12th and 37th minutes and Ribery in the 34th, but the French champions responded with goals from Sidney Govou in the
52nd and Karim Benzema in the 68th.

Bayern finish with 14 points, three ahead of Lyon, with Fiorentina ending on six points after a 1-0 win at Steaua Bucharest, Alberto Gilardino heading the winner in the 66th minute. (dpa)