Chelsea produced a composed performance to secure a fully deserved draw and a crucial away goal to put themselves in a promising position after their Champions League semi-final first leg against Real Madrid.
Thomas Tuchel's side were superior on the night and might even regard themselves as unfortunate not to take an advantage into the return at Stamford Bridge in eight days' time as they set their sights on a final date against either Manchester City or Paris St-Germain in Istanbul on 29 May.
Chelsea over-ran Madrid in the early stages and should have taken the lead when Timo Werner shot straight at keeper Thibaut Courtois from only six yards - but they were ahead after only 14 minutes when Christian Pulisic kept his cool to steer home a clever finish.
Real were on the ropes but danger man Karim Benzema, who had glanced the outside of an upright from long range, brought them back into the game with a brilliant equaliser, cushioning the ball with a header before sending an acrobatic volley beyond Edouard Mendy in the 29th minute.
Chelsea had the better of the second half but could not carve out the chance to score a potentially vital second. Manager Tuchel will still be very satisfied with both the performance and result.
Tuchel says his side will have to "fight for every centimetre" when they host Real Madrid in their Champions League semi-final second leg next week.
"Even if we had won here, everything is possible," he said.
"It's half-time and we'll have to fight for every centimetre and every advantage that we want to have and we need to fight and deserve it."
Real Madrid are 13-time winners of the Champions League but boss Zinedine Zidane accepts his side will have to work hard if they are to keep alive their chances of a 14th title.
The Spanish giants travel to Stamford Bridge for the second leg on Wednesday, 5 May (20:00 BST).