Werner’s first-half double – his first Premier League goals – looked to have sent Chelsea on their way to a comfortable victory over Southampton at Stamford Bridge on Saturday, only for the Blues to implode and up having to settle for a 3-3 draw.
Danny Ings’ strike on the stroke of half-time gave Southampton hope, before a howler from Kepa Arrizabalaga gave Che Adams the chance to make it 2-2.
Kai Havertz restored the Chelsea lead almost immediately but Jannik Vestergaard’s stoppage time leveller stole a share of the spoils.
The result is the Blues’ second 3-3 draw in three league games and they have kept just one clean sheet in their opening five matches this season.
“The first half we played very well,” Werner told the BBC. “When you get a goal two or three minutes before half-time it is not easy. You have to think with a clear head. Southampton make a lot of pressure on us and pressed us high. We gave them too much in terms of opportunities. We have to win the game.
“I am happy about the goals but I want to win the game. 50 per cent I am happy, 50 per cent not.
“I don’t know if we have a problem but the last three games we concede six goals and it is not where we want to be, to compete for titles.
“In Germany we always say defence wins titles. If we concede so many it is hard to win games and win titles.”