Match ends, Nottingham Forest 0, Arsenal 4.
Lucas Perez scored his first Arsenal goals as they reached the fourth round of the EFL Cup with a comfortable win at Championship side Nottingham Forest.
Granit Xhaka's stunning 30-yard strike gave the Gunners the lead.
Former Arsenal striker Nicklas Bendtner shot wide for Forest before Lucas doubled Arsenal's lead from the penalty spot after Chuba Akpom was fouled.
Lucas then rounded the goalkeeper for his second before Alex Oxlade-Chamberlain drove in a late fourth.
The Spanish forward, who joined from Deportivo La Coruna in August, impressed with his pace and strength throughout, with both qualities particularly evident for the second goal.
He chased a ball down the left, brushed off Forest defender Michael Mancienne before bursting past goalkeeper Vladimir Stojkovic and then poking home.
Bendtner, meanwhile, was making his first appearance against his old club, where he spent nine years at between 2005 and 2014.
Nottingham Forest boss Philippe Montanier: "Like the team, Niklas Bendtner started very well at the beginning and then after it was very difficult for him because Arsenal had the ball and he did not have a lot of opportunity to play.
"But physically I am surprised he is so fit because he had not a big pre-season with Copenhagen.
"It was a good experience not only for Nicklas but for all the players because Arsenal have great technique, better than us, and it was difficult for us but my players, they gave everything."
Arsenal boss Arsene Wenger said: "Lucas did well. He's quick, he's determined. He uses well his left foot - a bit too much in my taste. He doesn't use his right enough. Overall he's like all the left-footed players, you know.
"But I like his second goal because he has shown not only technique but determination and fight for the ball and finishing and I like that. The part he played in the goal of Oxlade-Chamberlain shows his awareness of other people and it is intelligent play.
"But the most important thing for me is that we win the game. Who scores is not so important but for the player individually it's good because he can convince people he can play for us. It will help himself as well to grow in belief."
- 17PereiraBooked at 40mins
- 8CohenBooked at 75mins
- 12DumitruSubstituted forPereira Carneiroat 81'minutes
- 10LansburyBooked at 67mins
- 22KasamiSubstituted forCarayolat 68'minutes
- 14BendtnerBooked at 16minsSubstituted forVelliosat 80'minutes
- 20Pereira Carneiro
- 55Maitland-NilesSubstituted forBielikat 87'minutes
- 16HoldingBooked at 37mins
- 31Reine-AdelaideSubstituted forZelalemat 83'minutes
- 32AkpomSubstituted forWillockat 83'minutes
- 41Da Silva
- Paul Tierney
- Shots on Target
Second Half ends, Nottingham Forest 0, Arsenal 4.
Goal! Nottingham Forest 0, Arsenal 4. Alex Oxlade-Chamberlain (Arsenal) left footed shot from the centre of the box to the bottom right corner. Assisted by Lucas Pérez.
Attempt blocked. Lucas Pérez (Arsenal) right footed shot from the centre of the box is blocked.
Substitution, Arsenal. Krystian Bielik replaces Ainsley Maitland-Niles.
Attempt blocked. Henri Lansbury (Nottingham Forest) header from the centre of the box is blocked.
Attempt saved. Alex Oxlade-Chamberlain (Arsenal) right footed shot from the right side of the box is saved in the bottom left corner.
Licá (Nottingham Forest) wins a free kick in the defensive half.
Foul by Chris Willock (Arsenal).
Substitution, Arsenal. Gedion Zelalem replaces Jeff Reine-Adelaide.
Substitution, Arsenal. Chris Willock replaces Chuba Akpom.
Attempt saved. Ben Osborn (Nottingham Forest) right footed shot from the centre of the box is saved in the bottom left corner.
Substitution, Nottingham Forest. Licá replaces Nicolao Dumitru.
Substitution, Nottingham Forest. Apostolos Vellios replaces Nicklas Bendtner.
Attempt missed. Mohamed Elneny (Arsenal) right footed shot from outside the box is close, but misses the top left corner.
Attempt saved. Lucas Pérez (Arsenal) left footed shot from the centre of the box is saved in the bottom left corner.
Chris Cohen (Nottingham Forest) is shown the yellow card for a bad foul.
Foul by Chris Cohen (Nottingham Forest).
Jeff Reine-Adelaide (Arsenal) wins a free kick in the defensive half.
Attempt saved. Lucas Pérez (Arsenal) left footed shot from the centre of the box is saved in the centre of the goal.