Alexandre Lacazette scored in a second successive match as Arsenal picked their second win in a row with a hard-fought 1-0 win away to Brighton on Tuesday night.
The Gunners went into the match on the back of a morale-boosting 3-1 win over Chelsea on Boxing Day, and they picked a win courtesy of a Lacazette strike in the second period.
The Frenchman started on the bench as the only change made by coach Mikel Arteta, giving way for Pierre-Emerick Aubameyang, who has managed to shake off a niggling injury.
The match had a slow start with little goalmouth action, even though both sides looked confident in attack.
The first chance fell to the hosts in the 12th minute after Elneny lost possession cheaply on the edge of the Arsenal box, and Brighton swiftly worked the ball out to the left and a low cross found Jahanbakhsh, but the Iranian blasted his first-time effort high and wide.
There were few clear-cut chances in the opening period though, even though the hosts were the better team going into the break, coming close on a number of times.
The second period however belonged to Mikel Arteta's side, and they were rewarded when the brilliant Bukayo Saka made a tricky turn in the middle of the pitch before sprinting away from Burn and found Lacazette, who had been on the pitch for seconds, to send in a low effort past Sanchez.
The goal proved all-important as it clinched them a second win in a row, moving the Gunners to 13th in the standings.
In another match, Leeds United gave West Bromwich a footballing lesson with a 5-0 thumping at the Hawthorns.
The visitors took the lead through a bizarre Romaine Sawyers' own goal in the ninth minute, and it set them on the right path to a huge win.
Ezgjan Alioski, Jack Harrison, and Rodrigo then scored a goal each in the opening period to ensure they led 4-0 going into the break.
Raphinha then added gloss to the scoreline with a fifth 15 minutes to go as Marcelo Bielsa's side moved to 11th on the table.
Elsewhere, Sheffield United set an unwanted Premier League record with a loss away to Burnley, meaning they have gone 16 matches without a win.
Ben Mee scored the all-important goal in the 33rd minute, which lifted them from the red-zone.
- Brighton 0-1 Arsenal
- Burnley 1-0 Sheffield Utd
- Southampton 0-0 West Ham
- West Brom 0-5 Leeds Utd