Chelsea's four-game winning run in the Premier League came to end after they were held to a 1-1 draw by Southampton on Saturday afternoon.
The Blues made four changes from the win over Newcastle United, as goalkeeper Edouard Mendy, Kurt Zouma, Reece James and N'Golo Kante were all recalled.
Marcos Alonso had a wonderful chance to give Thomas Tuchel's charges an early lead in the fifth minute after receiving a cross unmarked at the back post but his first-time volley missed the post across wide.
Chelsea fell behind in the 33rd minute after Takumi Minamino found space in between the defence to go clear on goal from Nathan Redmond's pass and feigned a strike before slotting a shot past Cesar Azpilicueta and Mendy into the bottom corner.
Zouma came close to snatching the equaliser for the hosts five minutes before the break after a well-weighted free-kick by Alonso but his header at the near post was parried away by shot-stopper Alex McCarthy, who preserved Southampton's narrow lead going to the break.
The visitors had a perfect start in the second stanza, as they were awarded a penalty eight minutes from the break after Danny Ings brought down Mason Mount inside the box and Mount levelled matters for Chelsea with a low strike on the wrong side of McCarthy.
Jannik Vestergaard came very close to restoring the lead for Ralph Hasenhuttl's troops in the 72nd minute with a powerful header at the back post from a deflected cross that came off the bar.
James had a great chance to snatch the winner for the Blues in the last six minutes after receiving a cross from Mount unmarked at the back post but his blasted his volley over the bar and the sides shared the spoils, as Chelsea remained in fourth place, three points behind Manchester United and Leicester City, who are second and third on the log respectively.