Shot blocked. Reiss Nelson - Arsenal - shot with left foot from the centre of the box is blocked. Assist - Kieran Tierney with a cross.
Nuno Tavares - Arsenal - won a free kick on the right wing.
Missed chance. Emile Smith Rowe - Arsenal - shot with right foot from the centre of the box is high and wide to the right. Assist - Reiss Nelson.
Missed chance. Albert Sambi Lokonga - Arsenal - shot with right foot from outside the box is high and wide to the right. Assist - Kieran Tierney.
Fouled by Vitaly Janelt - Brentford
New attacking attempt. Nicolas Pépé - Arsenal - shot with left foot from the centre of the box is saved in the left corner. Assist - Kieran Tierney.
Missed chance. Pablo Marí - Arsenal - shot with the head from the right side of the six yard box missed. Assist - Emile Smith Rowe with a cross after corner.
Corner - Arsenal. Conceded by David Raya.
SUBSTITUTION: M. Forss COMES ON FOR B. Mbeumo
Substitution - Brentford. Marcus Forss for Bryan Mbeumo.
Missed chance. Granit Xhaka - Arsenal - shot with left foot from outside the box is close, but missed. Assist - Albert Sambi Lokonga.
Granit Xhaka - Arsenal - won a free kick in defence.
Dangerous play by Vitaly Janelt - Brentford
Corner - Arsenal. Conceded by Vitaly Janelt.
Nuno Tavares - Arsenal - won a free kick in defence.
Missed chance. Nuno Tavares - Arsenal - shot with left foot from outside the box goes high. Assist - Albert Sambi Lokonga.
Fouled by Vitaly Janelt - Brentford
SUBSTITUTION: N. Tavares COMES ON FOR C. Chambers
Substitution - Arsenal. Nuno Tavares for Calum Chambers.
SUBSTITUTION: M. Bidstrup COMES ON FOR F. Onyeka
Substitution - Brentford. Mads Bidstrup for Frank Onyeka.
Missed chance. Christian Nørgaard - Brentford - shot with the head from few metres is close, but missed. Assist - Sergi Canós with a cross after corner.
Corner - Brentford. Conceded by Calum Chambers.
Granit Xhaka - Arsenal - won a free kick in defence.
Fouled by Ivan Toney - Brentford
Missed chance. Nicolas Pépé - Arsenal - shot with left foot from outside the box is high and wide to the left from a free kick.
Kieran Tierney - Arsenal - won a free kick in attack.
Fouled by Frank Onyeka - Brentford
Missed chance. Kieran Tierney - Arsenal - shot with left foot from the left side of the box missed. Assist - Emile Smith Rowe with a through ball.
Fouled by Christian Nørgaard - Brentford
Emile Smith Rowe - Arsenal - won a free kick on the right wing.
Goal! Brentford 2, Arsenal 0. Christian Nørgaard - Brentford - shot with the head from few metres to the high centre of the goal.
SUBSTITUTION: R. Nelson COMES ON FOR G. Martinelli
SUBSTITUTION: M. Bech Sorensen COMES ON FOR K. Ajer
Substitution - Brentford. Mads Bech Sørensen for Kristoffer Ajer - injury.
Substitution - Arsenal. Reiss Nelson for Gabriel Martinelli.
Missed chance. Granit Xhaka - Arsenal - shot with left foot from the left side of the box goes high. Assist - Calum Chambers with a cross.
Shot blocked. Calum Chambers - Arsenal - shot with right foot from outside the box is blocked. Assist - Granit Xhaka.
Offside - Brentford. Ivan Toney with a pass, however Vitaly Janelt is in offside.
New attacking attempt. Sergi Canós - Brentford - shot with right foot from the right side of the box is saved in the top centre of the goal. Assist - Bryan Mbeumo.
Missed chance. Gabriel Martinelli - Arsenal - header inside of six yard box - left side missed. Assist - Nicolas Pépé with a cross after corner.
Ivan Toney - Brentford - won a free kick in defence.
Fouled by Calum Chambers - Arsenal
Shot blocked. Kieran Tierney - Arsenal - shot with right foot from the left side of the box is blocked. Assist - Bukayo Saka.
Corner - Arsenal. Conceded by Sergi Canós.
New attacking attempt. Albert Sambi Lokonga - Arsenal - shot with left foot from outside the box is saved by goalkeeper in the centre of the goal. Assist - Nicolas Pépé.
SUBSTITUTION: B. Saka COMES ON FOR F. Balogun
Substitution - Arsenal. Bukayo Saka for Folarin Balogun.
Fouled by Rico Henry - Brentford
Calum Chambers - Arsenal - won a free kick on the right wing.
Ivan Toney - Brentford - won a free kick in defence.
Fouled by Ben White - Arsenal
New attacking attempt. Emile Smith Rowe - Arsenal - shot with right foot from the centre of the box is saved by goalkeeper in the centre of the goal. Assist - Kieran Tierney.
Ivan Toney - Brentford - won a free kick in defence.
Fouled by Albert Sambi Lokonga - Arsenal
Vitaly Janelt - Brentford - won a free kick in defence.
Shot blocked. Nicolas Pépé - Arsenal - shot with left foot from the centre of the box is blocked. Assist - Gabriel Martinelli.
Second Half starts Brentford 1, Arsenal 0.
Fouled by Emile Smith Rowe - Arsenal
First Half ended - Brentford 1, Arsenal 0.
Fouled by Ivan Toney - Brentford
Ben White - Arsenal - won a free kick in defence.
Missed chance. Folarin Balogun - Arsenal - shot with the head from the centre of the box missed. Assist - Kieran Tierney with a cross.
Missed chance. Folarin Balogun - Arsenal - shot with right foot from outside the box is high and wide to the right.
Fouled by Frank Onyeka - Brentford
Folarin Balogun - Arsenal - won a free kick in attack.
Pablo Marí - Arsenal - won a free kick in defence.
Fouled by Nicolas Pépé - Arsenal
Fouled by Ivan Toney - Brentford
Ethan Pinnock - Brentford - won a free kick in defence.
Missed chance. Nicolas Pépé - Arsenal - shot with left foot from outside the box missed to the left. Assist - Gabriel Martinelli.
Missed chance. Folarin Balogun - Arsenal - shot with right foot from the centre of the box missed.
Missed chance. Bryan Mbeumo - Brentford - shot with right foot from the right side of the box missed to the left. Assist - Kristoffer Ajer.
Fouled by Frank Onyeka - Brentford
Albert Sambi Lokonga - Arsenal - won a free kick in defence.
Missed chance. Sergi Canós - Brentford - shot with right foot from outside the box goes high. Assist - Frank Onyeka.
Offside - Arsenal. Nicolas Pépé with a pass, however Folarin Balogun is in offside.
Goal! Brentford 1, Arsenal 0. Sergi Canós - Brentford - shot with right foot from the left side of the box to the left corner. Assist - Ethan Pinnock with a head.
Corner - Brentford. Conceded by Calum Chambers.
Hand ball by Nicolas Pépé - Arsenal
Missed chance. Calum Chambers - Arsenal - shot with right foot from the right side of the box missed to the left. Assist - Kieran Tierney with a cross.
Corner - Arsenal. Conceded by Pontus Jansson.
Frank Onyeka - Brentford - won a free kick in defence.
Fouled by Gabriel Martinelli - Arsenal
Bryan Mbeumo - Brentford - hits the right post with a shot with right foot from the right side of the box. Assist - Ivan Toney with a through ball.
Missed chance. Frank Onyeka - Brentford - shot with the head from the centre of the box goes high.
Fouled by Christian Nørgaard - Brentford
Emile Smith Rowe - Arsenal - won a free kick in attack.
New attacking attempt. Kieran Tierney - Arsenal - shot with left foot from outside the box is saved in the top centre of the goal. Assist - Nicolas Pépé.
Corner - Arsenal. Conceded by Kristoffer Ajer.
The teams are on their way out of the tunnel - and we're about to get underway at Emirates Stadium