Real, Bayern begin with wins, Inter crash to Trabzonspor
Real Madrid and Bayern Munich began their Champions League campaigns with away victories, while Inter Milan crashed to a home defeat to Trabzonspor Wednesday, dpa reported.
Last season's losing finalists Manchester United meanwhile drew 1-1 at Benfica while neighbours Manchester City were held 1-1 at home by Serie A side Napoli.
Angel di Maria struck the winner for nine-time European champions Real in a 1-0 win at Dinamo Zagreb in Group D where Ajax and Olympique Lyon played out a goalless draw.
Di Maria hit a left-foot shot into the roof of the net in the 53rd minute after taking a pass from Marcelo, who was sent off 20 minutes later for a second booking after taking a dive.
Bayern were 2-0 winners at Spain's Villarreal courtesy of goals in the seventh minute goal from Toni Kroos and in the 76th from substitute Rafinha.
The win puts them at the top of Group A where City had to be content with a 1-1 draw with visiting Napoli
Uruguay striker Edinson Cavani struck a 69th-minute opener for the Italians but Aleksandar Kolarov levelled for City with a 75th-minute free-kick.
The biggest upset of the night was in Milan where Ondrej Celustka struck a 76th-minute winner for Turkey's Trabsonspor in a 1-0 victory over 2009/2010 European champions Inter Milan in Group B.
French title-holders Lille squandered a 2-0 lead to be held 2-2 by CSKA Moscow in the same group.
In Group C, Manchester United earned a 1-1 draw at Benfica who took the lead through Oscar Cardoza in the 24th minute.
United pulled level three minutes before the break with a fine strike from Ryan Giggs, who became the oldest Champions League goalscorer at the age of 37 years and 289 days.
Basel meanwhile overcame Romanians Otelul Galati 2-1 to go top of the group.