Marseille, France (My Sportsbook) - Filippo Inzaghi scored twice, including the match-winner in the 74th minute, helping AC Milan pick up a huge road win Tuesday in its return to Champions League play, 2-1 at Marseille.

AC Milan missed the Champions League last season, but Inzaghi returned to form with his 67th and 68th career goals in European competitions.

Inzaghi scored the opener at the rainy Stade Velodrome, and shocked the French side with his second goal midway through the second half - which Marseille had dominated.

Gabriel Heinze scored Marseille's goal in the 49th, but now the French club is in a big hole in Group C, which also features Real Madrid.

Cristiano Ronaldo scored a pair of goals as Real Madrid opened with a 5-2 win over Zurich. England's Manchester United and Chelsea, Germany's Bayern Munich and Wolfsburg also opened group play with wins.

Milan got control of the first half in the 28th when Inzaghi, an Italian World Cup winner, managed to stay onside before latching onto a perfect cross to the right post from Clarence Seedorf. Inzaghi placed a right-footed shot from just a few yards out inside the right post for his 67th goal in European play.

Marseille nearly answered before half, but AC Milan goalie Marco Storari made his only save in the opening 45 minutes to deny Benoit Cheyrou. The Marseille midfielder found enough space at the top of the area to unleash a left-footed shot, but Storari dove to his right to knock the ball wide.

The French side took control less than five minutes after the break, though, when Heinze headed a free kick from Cheyrou through Storari's legs in the 49th minute.

Lucho Gonzalez, who nearly leveled seconds earlier, earned a free kick on the right side and Cheyrou delivered a perfect pass to Heinze. The Argentine raced away from AC Milan defender Massimo Oddo and used the pace of the pass to snap a header down and past Storari.

Heinze's goal ignited the sold out crowd in Marseille, and the energy was also apparent on the field as the home side continued to pressure Milan in the hard soaking rain.

Cheyrou had one of the better chances in the following 10 minutes but his shot from the right, that was dipping inside the far post, was saved by Storari.

Although Marseille dominated the first 30 minutes of the second half, AC Milan created a quick scoring chance in the 74th and Inzaghi buried his second goal. Off a short free kick on the left, Milan found Seedorf on the top left edge of the area, and he chipped a quick pass to the far post to a charging Inzaghi.

Inzaghi slid in just in front of a Marseille player and poked the ball toward the left post from 10 yards out, hitting the back of the net for the 68th goal of his career in European competitions.

AC Milan held on the for the win, and sits behind Real on goal differential.

Ronaldo scored the opening goal in Real's CL season, leading the Spanish giant to the win in Switzerland. Ronaldo, who had a goal in Real's first two La Liga games, directed a 25-yard free kick into the upper-left corner in the 27th to open the scoring.

Real veteran Raul added the second goal in the 34th off an assist from Gonzalo Higuain. Raul was set up directly in front of the goal and, from just a few yards out, easily converted Higuain's pass.

Raul returned the favor before halftime, setting up Higuain on the right side of the area, where he finished to the lower-left corner to put Real in control before half.

Zurich didn't fold, though, and the small Swiss side pulled two goals back in a three-minute stretch early in the second half.

Xavier Margairaz converted a penalty after a hard foul by Real goalkeeper Iker Casillas in the 63rd, and Johann Vonlanthen sent a cross to Silvan Aegerter in the 65th that was headed home from the left side of the six-yard box.

Ronaldo took the pressure off Madrid with his second goal in the 89th and Guti secured all three points with another goal in the 90th.

Manchester United, which won the Champions League two seasons ago and lost in the final last season, opened with a 1-0 win over Besiktas.

Veteran Paul Scholes latched onto a rebound, which followed a shot by Nani, to score into an empty net and provide all the offense United needed.

Chelsea also sneaked out a win, getting a goal from Nicolas Anelka in the 48th to edge FC Porto 1-0. Anelka's initial shot was blocked by Porto goalie Helton but the Frenchman slotted the rebound into the top of the net.

Bayern Munich broke out in the second half at Maccabi Haifia in Israel, taking the lead on Daniel van Buyten's 64th-minute strike, and putting the match away when Thomas Muller scored a pair of goals in the last 10 minutes of a 3-0 win.

Van Buyten scored the opener from 16 yards out when he picked out the bottom- right corner. Muller was set up by Andreas Ottl in the 85th when he converted from 18 yards, and was set up by Mario Gomez in the 88th for an easy six-yard finish.

German champions Wolfsburg opened with a convincing 3-1 win over CSKA Moscow, thanks to a hat trick from Grafite. Grafite, who led the Bundesliga with 28 goals last season, opened the scoring in the 36th and added a penalty kick in the 41st to spark the win.

CSKA Moscow cut the deficit in half in the 77th when Alan Dzagoev scored, but Grafite put Wolfsburg back in control in the 87th with his third goal.

Also Tuesday, Juventus took an early lead against Bordeaux but settled for a 1-1 draw. Vincenzo Iaquinta scored for Juve in the 63rd, and Jaroslav Plasil stole a road point for Bordeaux in the 75th. Atletico Madrid settled for a 0-0 draw at home against APOEL in the day's other match.

On Wednesday, Liverpool hosts Debrecen, Lyon hosts Fiorentina, Inter Milan hosts Barcelona, Dynamo Kyiv hosts Rubin, Stuttgart hosts Rangers, Sevilla hosts Unirea, Olympiacos hosts AZ and Standard Liege hosts Arsenal.