Arsenal had to fight for a point on the road in a 1-1 draw at struggling Southampton on Tuesday.
In a gritty contest, Gaston Ramirez's opener was cancelled out by an own goal from Saints teammate Guly Do Prado, with the former also having an effort disallowed at St. Mary's Stadium.
The stalemate leaves Arsenal fifth on the Premier League table with 34 points from 20 games - 18 points adrift of leaders Manchester United and 16 ahead of 17th-placed Southampton, who climbed out of the relegation zone at Wigan Athletic's expense.
Arsene Wenger's men started the game brightly but lost momentum, with the Saints breaking the deadlock 34 minutes in. Ramirez, his club's record signing, slotted a loose ball home from 10 yards after some erratic defending by the Gunners.
The lead, however, was shortlived, as a sliding Do Prado directed the ball into his own net six minutes later when trying to clear a dangerous Theo Walcott free-kick.
Nigel Adkins's outfit raised their tempo after the interval, with Do Prado testing goalkeeper Wojciech Szczesny with a swift turn and strike in the 55th minute.
Szczesny then made a fine reaction save from the resultant corner after the ball struck the knee of defender Bacary Sagna.
At the other end, Walcott drew a regulation stop from Artur Boruc with a powerful shot in the 70th minute.
A minute later Ramirez looked to have scored his second with a beautifully taken volley but his strike was ruled out for an earlier push on Laurent Koscielny.
Both teams had chances in the closing stages, with Mikel Arteta and Gervinho failing to hit the target from promising positions, while Jason Puncheon's fierce drive was blocked by Szczesny.