Lacazette admits that their run of seven Premier League away games without a win had been playing on their minds before the win on Saturday.
"Yes [it's been on our minds] a little bit but we knew we had the quality to win today, it's about us and we did that," he said.
"I think we should have had more situations to score more goals but we played against a strong team today in the second half. We were in a difficult moment so these three points are good for us.
"We knew today was going to be hard but we are happy with the three points in the race at the top of the table."