Second Half ended - Olympiakos 1, Arsenal 3.
Missed chance. Nicolas Pépé - Arsenal - shot with right foot from the centre of the box is high and wide to the right. Assist - Alexandre Lacazette.
Corner - Arsenal. Conceded by Sokratis Papastathopoulos.
Substitution - Arsenal. Alexandre Lacazette for Pierre-Emerick Aubameyang.
SUBSTITUTION: Alexandre Lacazette COMES ON FOR Pierre-Emerick Aubameyang
SUBSTITUTION: T. Androutsos COMES ON FOR Georgios Masouras
Substitution - Olympiakos. Thanasis Androutsos for Giorgos Masouras.
Goal! Olympiakos 1, Arsenal 3. Mohamed Elneny - Arsenal - shot with right foot from outside the box to the right corner. Assist - Gabriel Magalhães.
Substitution - Arsenal. Mohamed Elneny for Willian.
Substitution - Arsenal. Nicolas Pépé for Bukayo Saka.
SUBSTITUTION: Mohamed Elneny COMES ON FOR Willian
SUBSTITUTION: Nicolas Pépé COMES ON FOR Bukayo Saka
SUBSTITUTION: E. Smith Rowe COMES ON FOR Martin Ødegaard
Substitution - Arsenal. Emile Smith Rowe for Martin Ødegaard.
Goal! Olympiakos 1, Arsenal 2. Gabriel Magalhães - Arsenal - shot with the head from the centre of the box to the right corner. Assist - Willian with a cross after corner.
Corner - Arsenal. Conceded by Andreas Bouchalakis.
Shot blocked. Martin Ødegaard - Arsenal - shot with left foot from outside the box is blocked. Assist - Pierre-Emerick Aubameyang.
Substitution - Olympiakos. Ahmed Hassan Mahgoub for Youssef El-Arabi.
SUBSTITUTION: Ahmed Hassan COMES ON FOR Youssef El Arabi
Willian - Arsenal - won a free kick in defence.
Fouled by Youssef El-Arabi - Olympiakos
Missed chance. Willian - Arsenal - shot with left foot from outside the box goes high. Assist - Martin Ødegaard.
Martin Ødegaard - Arsenal - won a free kick in attack.
Mohamed Mady Camara - Olympiakos - won a free kick in defence.
Fouled by Martin Ødegaard - Arsenal
Shot blocked. Martin Ødegaard - Arsenal - shot with left foot from the right side of the box is blocked. Assist - Dani Ceballos.
Shot blocked. Bukayo Saka - Arsenal - shot with left foot from the right side of the box is blocked. Assist - Martin Ødegaard.
Shot blocked. Youssef El-Arabi - Olympiakos - shot with right foot from the centre of the box is blocked. Assist - Lazar Randjelovic.
Corner - Olympiakos. Conceded by Héctor Bellerín.
Fouled by Sokratis Papastathopoulos - Olympiakos
Willian - Arsenal - won a free kick in attack.
Gabriel Magalhães - Arsenal - won a free kick in defence.
Fouled by Giorgos Masouras - Olympiakos
Granit Xhaka - Arsenal - won a free kick in attack.
Fouled by Willian - Arsenal
Andreas Bouchalakis - Olympiakos - won a free kick in attack.
SUBSTITUTION: Lazar Randjelovic COMES ON FOR Bruma
Substitution - Olympiakos. Lazar Randjelovic for Bruma.
Goal! Olympiakos 1, Arsenal 1. Youssef El-Arabi - Olympiakos - shot with right foot from outside the box to the centre of the goal.
Offside - Arsenal. Martin Ødegaard with a pass, however Héctor Bellerín is in offside.
Substitution - Arsenal. Dani Ceballos for Thomas Partey.
SUBSTITUTION: Dani Ceballos COMES ON FOR Thomas Partey
Shot blocked. Bukayo Saka - Arsenal - shot with left foot from outside the box is blocked.
Thomas Partey - Arsenal - won a free kick in defence.
New attacking attempt. Thomas Partey - Arsenal - shot with right foot from outside the box is saved in the left corner. Assist - Willian.
SUBSTITUTION: K. Fortounis COMES ON FOR Mathieu Valbuena
SUBSTITUTION: José Holebas COMES ON FOR Oleg Reabciuk
Substitution - Olympiakos. José Holebas for Oleg Reabciuk.
Substitution - Olympiakos. Konstantinos Fortounis for Mathieu Valbuena.
First Half ended - Olympiakos 0, Arsenal 1.
Second Half starts Olympiakos 0, Arsenal 1.
Gabriel Magalhães - Arsenal - receive yellow card for a foul.
Mathieu Valbuena - Olympiakos - won a free kick in attack.
Fouled by Gabriel Magalhães - Arsenal
BOOKING: Gabriel Magalhães
New attacking attempt. Willian - Arsenal - shot with right foot from the left side of the box is saved in the top centre of the goal. Assist - Bukayo Saka.
Missed chance. Giorgos Masouras - Olympiakos - shot with right foot from the left side of the box is high and wide to the right.
Shot blocked. Youssef El-Arabi - Olympiakos - shot with left foot from the centre of the box is blocked. Assist - Bruma.
BOOKING: Andreas Bouchalakis
Andreas Bouchalakis - Olympiakos - receive yellow card for a foul.
Pierre-Emerick Aubameyang - Arsenal - won a free kick in defence.
Fouled by Andreas Bouchalakis - Olympiakos
Goal! Olympiakos 0, Arsenal 1. Martin Ødegaard - Arsenal - shot with left foot from outside the box to the high centre of the goal. Assist - Thomas Partey.
Shot blocked. Pierre-Emerick Aubameyang - Arsenal - shot with right foot from the left side of the box is blocked. Assist - Martin Ødegaard.
Shot blocked. Granit Xhaka - Arsenal - shot with left foot from outside the box is blocked.
Fouled by Oleg Reabciuk - Olympiakos
Bukayo Saka - Arsenal - won a free kick in attack.
New attacking attempt. Pierre-Emerick Aubameyang - Arsenal - shot with right foot from outside the box is saved in the top right corner.
Yann M Vila - Olympiakos - receive yellow card for a foul.
Fouled by Yann M Vila - Olympiakos
New attacking attempt. Bruma - Olympiakos - shot with right foot from the centre of the box is saved by goalkeeper in the centre of the goal.
Sokratis Papastathopoulos - Olympiakos - won a free kick on the right wing.
Fouled by Pierre-Emerick Aubameyang - Arsenal
New attacking attempt. David Luiz - Arsenal - shot with right foot from outside the box is saved in the top centre of the goal.
Fouled by Kenny Lala - Olympiakos
Fouled by Bruma - Olympiakos
Kieran Tierney - Arsenal - won a free kick in defence.
Missed chance. Thomas Partey - Arsenal - shot with right foot from outside the box goes high. Assist - Martin Ødegaard.
Shot blocked. Mohamed Mady Camara - Olympiakos - shot with left foot from outside the box is blocked.
Fouled by Mathieu Valbuena - Olympiakos
Bukayo Saka - Arsenal - won a free kick in defence.
New attacking attempt. Pierre-Emerick Aubameyang - Arsenal - shot with the head from the centre of the box is saved in the top centre of the goal. Assist - Héctor Bellerín with a cross.
Offside - Olympiakos. Yann M Vila with a pass, however Youssef El-Arabi is in offside.
Oleg Reabciuk - Olympiakos - won a free kick in defence.
Fouled by Bukayo Saka - Arsenal
Missed chance. Martin Ødegaard - Arsenal - shot with left foot from the centre of the box is close, but missed. Assist - Kieran Tierney with a cross.
Thats all. Game finished - Olympiakos 1, Arsenal 3.
The teams are on their way out of the tunnel - and we're about to get underway at Emirates Stadium