AC Milan's season went from bad to worse on Wednesday after a last-minute goal by Scott McDonald condemned the holders to a 2-1 Champions League defeat at Celtic where goalkeeper Dida was hit on the face by a fan.

Milan have made a poor start to their Serie A season but their fortunes took a dramatic turn in injury time when the supporter ran on to the pitch and hit the Brazilian.

Striker Didier Drogba helped ease Chelsea's recent blues with the winner in a 2-1 victory at Valencia after David Villa had put the home side in front early on.

Joe Cole handed Chelsea an equaliser before Drogba struck after 71 minutes to settle the Group B match and boost new coach Avram Grant after a sticky period following the departure of popular Portuguese manager Jose Mourinho two weeks ago.  Last season's beaten finalists and 2005 winners Liverpool suffered a surprise 1-0 defeat at home to Marseille in Group A with Mathieu Valbuena bagging a classy goal after 77 minutes.

Goran Pandev scored a superb brace to cancel out Ruud van Nistelrooy's double in Lazio's 2-2 draw with Real Madrid while Ricardo Quaresma grabbed the winner deep into stoppage time as 2004 champions Porto won 1-0 at Besiktas.

Werder Bremen, who battered Arminia Bielefeld 8-1 in the Bundesliga at the weekend, looked to be cruising at home before Olympiakos stormed back to win the Group C clash 3-1.

Germany did have a winner though with Jermaine Jones and Kevin Kuranyi scoring second half goals to give Schalke a 2-0 win at Norway's Rosenborg Trondheim.  Benfica lost 1-0 at home to Ukraine's Shakhtar Donetsk with Jadson grabbing the goal just before the interval.

Dida attacked
At Celtic, a fan got on the pitch and hit Dida, who gave chase before dramatically collapsing and being carried off on a stretcher.

The Brazilian was struck by a flare in a Champions League quarterfinal second leg with Inter Milan in 2005.
On Wednesday, Milan equalised through Kaka's penalty after Stephen McManus's 62nd minute opener before McDonald's dramatic late winner sparked the fan's attack on Dida.

Real took a ninth minute lead when Dutch striker Van Nistelrooy exploited some loose Lazio marking to divert compatriot Wesley Sneijder's free kick.  Lazio's Pandev levelled with a left-foot volley before Nistlerooy struck again in the second half when he was released by Raul only for Pandev to score again.

AFTERMATH

Life ban on fan for Dida attack
London, Reuters: The 27-year-old man who slapped AC Milan goalkeeper Dida during Wednesday's Champions league match at Celtic has been given a life ban by the Scottish club after owning up and being handed over to the police.  A statement on Celtic's website said the unnamed individual was in custody in Glasgow.