Arsenal did enough to win 2-1 at Huddersfield Town on Saturday.
Arsenal remain in sixth but drew level with fifth-placed Chelsea, who play Man City on Sunday, and move back to within a point of flying Manchester United as the top four chase really hots up.
Both goals came in the first half with Alex Iwobi putting the Gunners ahead after 16 minutes before Alexandre Lacazette doubled their lead just a minute before half time.
The Terriers improved in the second half and got a late consolation with a Sead Kolasinac own goal but it was not enough as they slipped to a 19th defeat of the season to remain rooted to the foot of the table and heading for inevitable relegation.
Gunners boss Unai Emery said, "I am very happy. We were working very well and every player was working and helping each other. Today I am very proud with our work, every player worked. I want more every time, because in the first half the difference between them and us was two goals, and it is not enough, because if they score one they can get more.
"My ambition is to want them to keep the mentality and don't concede the position to the opposition. But I know it's easier on the bench than on the pitch but today I think the players worked well."