Chelsea kept their season alive by beating Borussia Dortmund 2-0 at Stamford Bridge to progress to the quarter-finals of the Champions League 2-1 on aggregate on Tuesday.
Raheem Sterling and Kai Havertz, with a twice-taken penalty, got the goals as the Blues relieved the pressure on manager Graham Potter.
The Englishman's job was on the line after a season that has so far failed to deliver any return on a world-record injection of over o500 million ($600 million) in one season on new signings.
Chelsea had won just three of their previous 16 matches to fall to 10th in the Premier League and bow out early of both domestic cups.
But some of their expensive collection of stars showed up in time to remain in the hunt for a third European Cup.
"There was a fantastic feeling in the dressing room. We have been through a tough period and this competition means a lot for us," said Potter.
"We wanted to progress and get into the last eight and it sets us up for the next few weeks."
Dortmund arrived in England on the back of a 10-game winning run in all competitions.
But the visitors posed barely any attacking threat in the first half bar a Marco Reus free-kick that Kepa Arrizabalaga did brilliantly to palm to safety.
"We have to say, over the course of two games, Chelsea deserve to go through," said Dortmund boss Edin Terzic.
"Both legs were very tight games. In this type of games inches and moments decide if you are going to the next round or not."
Chances came and went frequently at the other end. Havertz smashed a volley off the inside of the post and then finally found the net via the underside of the bar only for the goal to be ruled out for an offside against Sterling earlier in the move.
The worst miss was to come as Kalidou Koulibaly miscued with an open goal from Ben Chilwell's free-kick and Felix's follow-up effort was blocked on the line.
Potter was uncharacteristically animated on the touchline as he constantly whipped the crowd up to keep pushing his side forward.
"There is a lot of emotion in the end," added Potter. "It was tense in the end but the boys played fantastic.
"I am delighted for them to get the win and great for everyone here."
The home fans finally had something to celebrate three minutes before half-time.
