Paris:  Manchester United and rivals Manchester City both failed to get off to winning starts in the Champions League as they were both held 1-1 by Benfica and Napoli respectively.

Napoli at least managed to grab a point away from home on Wednesday, better than their Serie A rivals and 2010 champions Inter Milan, who suffered a stunning 1-0 home defeat at the hands of Champions League debutants Turkish side Trabzonspor.

Trabzonspor were only in the group stage because rivals Fenerbahce were kicked out over a domestic match fixing scandal.

 There were no such problems for other former champions Bayern Munich and Real Madrid as the Germans secured a fine 2-0 away win at Villarreal while Real beat Dinamo Zagreb 1-0 away.

Napoli took the lead with a brilliant effort as Edinson Cavani slotted home after a great run by Christian Maggio only for Aleksander Kolarov to level minutes later with a superb freekick.

City manager Roberto Mancini said that the occasion had perhaps got to his players.

"Maybe some players wanted to win the game alone, because we played one touch too many in the first-half.”

"We wanted to win but the Champions League is hard."

 United also started well against Benfica but last season's finalists failed to take their chances, whereas Paraguayan striker Oscar Cardoso made no mistake for the hosts to break the deadlock.

Cardoso controlled Nicolas Gaitan's delightful pass and fired home from the edge of the box.