Arsenal passed up the chance to put clear water between themselves and the chasing pack after being forced to settle for a 2-2 draw at Southampton.
The result kept Arsenal atop the table with 52 points. The Gunners sit two points ahead of Manchester City and three ahead of Chelsea, but both chasing teams have a chance to overtake Arsenal with victories Wednesday.
Southampton, meanwhile, are ninth with 32 points. The Saints have won just twice in their last 12 league matches.
The Gunners were on the back foot from early in the contest and the Saints took a deserved lead on 21 minutes.
Luke Shaw, in all probability, added a few pounds to his asking price with a brilliant deep cross from the byline that picked out Jose Fonte, who powered a low header beyond Wojciech Szczesny.
The Saints handed a full debut to Sam Gallagher and the teenager should have doubled the lead, but he failed to convert when the ball fell to him six yards out.
Arsenal’s first chance of the match arrived on 44 minutes, with the unlikely figure of Laurent Koscielny forcing a save out of Saints keeper Artur Boruc.
Whatever Gunners boss Arsene Wenger said at the interval worked wonders, as his side were in front within seven minutes.
Olivier Giroud snapped a lengthy barren run recently and he showed real confidence in drawing Arsenal level with a clever backheel.
On 52 minutes, Arsenal had turned the game on its head as Mesut Ozil teed up Santi Cazorla for their second.
But just when it appeared Arsenal would run away with the contest, the Saints were back on level terms. A clever pass from Jay Rodriguez picked out Adam Lallana and he drilled the ball beyond Szczesny.
Arsenal were reduced to 10 men on 80 minutes as Mathieu Flamini was dismissed for a wild, two-footed lunge on Lallana.
On target: 5-4
Passing Accuracy: 85%-80%