Full-Time: OLYMPIACOS 0-0 CHELSEA.

Kalou finds himself unmarked in the area, but he miscontrols and Nikopolidis gathers the loose ball.

Ashley Cole loses the ball and makes a rash challenge to go into the referee's notebook.

A patient bit of play by Chelsea ends with Essien driving a 35-yard shot wide of the goal, with Nikopolidis having it covered all the way.

Lampard is on for Ballack and Olympiacos replace Kovacevic with Leonel Nunez.

Drogba plays the ball on to Ballack, he turns and fires a shot straight at Nikopolidis from 25 yards out.

The home side bring on Leonardo for Galletti.

Anelka latches on to a ball in from the right by Belletti, but mishits his shot wide of the far post from the edge of the area.

Just over ten minutes to go and this thriller is almost over.

Fernando Belluschi comes on for Djordjevic.

After play is held up for an injury, Kalou and Anelka take over from Joe Cole and Malouda.

Malouda skips away from his marker and fires in a left-foot shot from 20 yards, but it drifts a couple of yards wide.

Chelsea are preparing to bring on Nicolas Anelka and Salomon Kalou.

Makelele lifts the ball high into the area following a free-kick, but both Ballack and Drogba are offside.

Midway through the second half and still no sign of a breakthrough.

Stoltidis' far-post cross finds Galletti, but he screws a right-foot volley wide of the near post, with Cech having it covered.

The home fans have begun to whistle loudly with Chelsea in possession, at least the whistling will keep them awake.

Makelele talks himself into the book.

Malouda is penalised for an arm in Torosidis' face, but escapes a booking.

Ballack leads another quick counter, but the Blues decide to slow the game down and knock the ball around.

An hour gone and the game has been far from action-packed so far.

Djordjevic drills in a low, left-foot shot and Cech is down smartly at his near post to make the save.

Belletti is cautioned for a desperate lunge at Stoltidis.

Ballack beats a couple of defenders, but his pass towards Drogba is cut out and cleared.

Grant looks less than impressed on the Chelsea bench, but his side are getting the job done at the moment.

Ashley Cole's cross is deflected off the head of Drogba and straight through to Nikopolidis.

Kovacevic chests the ball down on the edge of the area, but Carvalho is there to cover and the ball is played back to Cech.

Malouda cracks a shot high and wide from distance.

Belletti plays in Joe Cole over on the right and the Blues win a corner after a good interchange of passes.

Chelsea get the second half underway.

Half-Time: OLYMPIACOS 0-0 CHELSEA.

One added minute to be played.

A couple of minutes to go to half-time, as another Chelsea free-kick into the area comes to nothing other than a goal-kick.

The possession so far has been split 50-50 and neither side has managed to do much with it.

Predrag Djordjevic plays in a dangerous ball from the left and Alex has to get in quickly to avert the danger.

Alex is the first player to be booked, for a dreadful late lunge at Cristian Ledesma.

Chelsea seem to be comfortable enough at the moment, Olympiacos have carved out just the one chance.

Drogba gets a shot in from 20 yards, but it dribbles through straight into the arms of Nikopolidis.

A corner from the right is headed on by Stoltidis and Torosidis somehow glances the ball wide from inside the six-yard box, a real let-off for Chelsea.

Drogba is now moving a bit more freely, as Chelsea search for an opening.

Drogba looks to be struggling with an injury, he's limping badly.

Kovacevic is in the wars, having been upended by both Alex and Claude Makelele.

Avram Grant is off the bench to urge his players on, it's all been a bit slow-paced so far.

Juliano Belletti drifts over the free-kick, but Malouda fails to get a firm header in and the danger passes.

Chelsea have a free-kick 30 yards out, can they make it count?

The game is a bit scrappy at the moment, with most of the play condensed in midfield.

Drogba gets the ball in from the left and after a couple of rebounds, Florent Malouda fires a shot straight at keeper Antonios Nikopolidis.

Ricardo Carvalho makes a superb defensive headed clearance after Olympiacos spring forward on a quick counter-attack.

Vassilios Torosidis finds space down the right, but his cross is lashed high into the crowd.

Ieroklis Stoltidis races into the Blues area, but his pass across the box is cleared away.

A relatively quiet opening few minutes of the game, no clear chances as yet.

Luciano Galletti has a shot deflected behind for a corner on the left, but it comes to nothing.

A solid enough start from the Blues, Petr Cech has yet to handle the ball.

Michael Essien drives forward from midfield, but drills his shot well wide of target from 30 yards out.

The home side get the game underway.

The experienced Darko Kovacevic leads the home attack.

Didier Drogba is back to lead the Chelsea attack after the Africa Cup of Nations, but there's no place for either Frank Lampard or John Terry in the starting line-up.

Chelsea's Champions League continues in Greece, as the Blues face Olympiacos in the first leg of their first knockout round tie.