Brighton ended a three-game losing run as they fought back to claim a 1-1 draw with Arsenal at the Amex Stadium.
Pierre-Emerick Aubameyang put the Gunners ahead in the seventh minute with his 13th Premier League goal of the season.
But, after Mat Ryan made a sharp save to prevent Aubameyang from making it 2-0, Brighton levelled in the 35th minute when Arsenal failed to deal with a long pass over the top and Jurgen Locadia scored.
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Brighton: Ryan (7), Montoya (6), Duffy (6), Balogun (6), Bernardo (7), Stephens (7), March (6), Propper (7), Gross (5), Locadia (7), Murray (5)
Subs: Andone (5), Knockaert (5)
Arsenal: Leno (6), Kolasinac (6), Sokratis (6), Koscielny (6), Lichsteiner (6), Guendouzi (6), Xhaka (6), Torreira (6), Ozil (5), Lacazette (6), Aubameyang (7)
Subs: Iwobi (5), Ramsey (5), Maitland-Niles (5)
Man of the match: Davy Propper
Arsenal's level dropped in the second half but Brighton were unable to take advantage, with Solly March and Locadia spurning their best chances.
Brighton beat Arsenal 2-1 at the Amex last season but a repeat looked unlikely in the opening 30 minutes as the Gunners made a fast start.
Ryan tipped over a lob from Aubameyang in the fourth minute before Brighton failed to clear their lines and Aubameyang finished with a curling first-time shot from inside the box.
Brighton struggled to settle into the game and when they did get the ball in the net it was ruled out as Glenn Murray had kicked the ball out of Bernd Leno's hands.
Ryan then made a fantastic save to deny Aubameyang before Brighton levelled after an Arsenal corner.
Propper's long pass was flicked backwards by Stephan Lichtsteiner and Locadia nipped ahead of Leno and then finished into the empty net.
Mesut Ozil was taken off at half-time but that did not appear to benefit Arsenal as they were unable to regain their early control of the game.
Brighton had the better chances as Propper twice went close before March lobbed an effort over the bar from the edge of the box and then Locadia dragged a shot wide.
Duffy returned from suspension for Brighton and started along with Murray and Stephens.
Arsenal made three changes as Lichtsteiner, Torreira and Koscielny replaced Monreal, Elneny and Maitland-Niles.
Arsenal applied pressure late in the game but the closest they came was when a clearance deflected off Alex Iwobi and spun past the post.
- Brighton have lost just two of their last 12 Premier League home games, winning five and drawing five.
- Arsenal have conceded in each of their last nine away Premier League games, only going longer without an away shut-out in the competition in a run of 11 ending in October 2010.
- Brighton haven't won any of their last 10 league games played on Boxing Day (W0 D4 L6), since beating QPR 1-0 in 2005-06.
- Arsenal failed to score in the second-half for the first time in their last 17 Premier League games, since losing to Chelsea on August 18th.
- Pierre-Emerick Aubameyang has been directly involved in 30 goals in his 32 Premier League appearances for Arsenal, scoring 23 and assisting seven.
- Since Pierre-Emerick Aubameyang's debut for Arsenal in February, no duo has combined for more Premier League goals than the Gabonese striker and Alexandre Lacazette (6, level with Bournemouth's Wilson and Fraser and Tottenham's Kane and Eriksen).
- Arsenal's Alexandre Lacazette has provided an assist in three consecutive games in Europe's big five leagues for the first time ever.
- Brighton's Jurgen Locadia scored for the first time in his last 18 Premier League games, since scoring on his debut in the competition in February against Swansea City,
Chris Hughton: "We showed great character to get back into the game. If there was a team that was going to score in the second half, I felt it was going to be us."
Unai Emery: "I think the key today was the first 45 minutes. We controlled the match like we wanted, we scored and had two good chances from Aubameyang to get the second - but their keeper saved. Then they equalised. From then, it gave us the second half to try again to control the match, create chances and be able to win - but we didn't do that."
Man of the match - Davy Propper
Propper played a key role in helping Brighton get a point from the game. He was busy in shielding the back four and played several intelligent passes to help Brighton break. He looked like he had a good connection with former PSV team-mate Locadia, who also had a good game.
Brighton host Everton on Saturday before a trip to West Ham on Wednesday, January 2. Arsenal travel to league leaders Liverpool on Saturday and then host Fulham on Tuesday, January 1.