With 15 minutes remaining the match, Arsenal had a 2-1 lead over their opponents, Emery opted to withdraw Lacazette, who had looked risky throughout and even netted the team's second goal, in favour of midfielder Aaron Ramsey.
"We are very happy with the attacking players, scoring lots of goals like today".
The Gunners secured a 4-1 win over the Cottagers at Emirates Stadium on Tuesday afternoon, thanks to goals from Granit Xhaka, Lacazette, Aaron Ramsey and Pierre-Emerick Aubameyang.
"But I need to do my work, Lacazette his work and he scored also".
United States border force fires tear gas at migrants crossing from Mexico
The incursion took place at a spot where there is border fencing, but it's a very old version that's relatively easy to penetrate. An AP photographer at the scene said the migrants began throwing rocks after the tear gas was sacked .
Ramsey's long-term future appears to be away from the Emirates after Arsenal retracted a contract offer that was on the table for the Wales global. I do want the best for my client, of course, but I want the best for Arsenal as well.
"Today was the first time we could play with Sokratis [Papastathopoulos], [Shkodran] Mustafi and [Laurent] Koscielny".
"It is a unusual match because when you come to Arsenal, you know the quality of players is different", he said.
"They had a few good chances but we're resilient." .
"We are in the relegation zone, they are higher". In the first 30 minutes we created two great chances and Arsenal fans were not happy with their team. We had to stay more concentrated in every circumstance.