Chelsea needed late strikes from Timo Werner and Ben Chilwell to secure a 3-1 win over 10-man Southampton at Stamford Bridge on Saturday.

Trevoh Chalobah put Chelsea ahead early on but James Ward-Prowse converted from the penalty spot in the second half before getting sent off for a reckless tackle.

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Chelsea made the most of the man advantage and Werner and Chilwell scored in the last 10 minutes to send them top of the Premier League.

It was a much-needed victory for Thomas Tuchel's side after suffering back-to-back defeats to Manchester City and Juventus.

"We had to be careful that we don't start being too sad and too worried," he told BBC radio.

"It was necessary that we have better performances than the last two, that we shape up our belief and we sharpen our mindset."

Chalobah broke the deadlock after nine minutes when he reacted to Ruben Loftus-Cheek's flick on from a corner.

The hosts thought they doubled their lead on two occasions but both strikes were disallowed.

Romelu Lukaku scored after 36 minutes but his strike was ruled out for offside while just before the break, VAR ruled out a Werner goal after Cesar Azpilicueta was adjudged to have fouled Kyle Walker-Peters beforehand.

Southampton performed better following the break and were awarded a penalty after Chilwell brought down Tino Livramento.

Ward-Prowse equalised from the spot on the hour mark but was sent off after 75 minutes.

The midfielder was originally given a yellow card for a challenge on Jorginho but was shown a red card after a VAR check.

With six minutes to go, Chelsea went ahead again after Werner tapped home into an empty net following Azpilicueta's cross.

It was Werner's first Premier League goal of the season. Chilwell grabbed a third with a minute remaining to seal the win for Chelsea.