As they held in-form Chelsea to a 1-1 draw at St Mary’s Stadium, Southampton ended a run of six defeats.
Chelsea dominated the first half on a run of four consecutive wins, recording 72.5% ownership, but only had Marcos Alonso’s first-time shot as their best chance in the sixth minute.
Southampton went ahead on a 33-minute run against Takumi Minamino with a cool finish. Before dumming Edouard Mendy and Cesar Azpilicueta to stroke in the ball, the on-loan midfielder took Nathan Redmond’s through-ball.
Nine minutes after half-time, the visitors equalized through Mason Mount’s penalty, awarded by Danny Ings for a foul on the midfielder.
When Jannik Vestergaard’s header clipped the bar on 71 minutes, Southampton nearly led again.
With Reece James blazing for their best chance, Chelsea continued to dominate but could not find a winner.
Southampton is 13th on 30 points, while Thomas Tuchel’s sixth game unbeaten keeps Chelsea fourth on 43 points, one ahead of West Ham United having played one more game.