Lionel Messi scored his first goal against Chelsea to earn Barcelona a 1-1 draw in the first leg of their Champions League last-16 clash at Stamford Bridge on Tuesday
Messi had not found the net in eight previous matches against the Blues, but he punished Andreas Christensen's misdirected pass across his own box in the 75th minute to grab an away goal for Barca
Willian had put Chelsea ahead in the 62nd minute with a brilliant curling strike, having also hit both posts in the first half
But the Premier League side must now score in the return leg at the Nou Camp on March 14 if they are to progress to the quarter-finals
Chelsea, who started with Eden Hazard as a false nine and Alvaro Morata and Olivier Giroud on the bench, had looked as though they were going to take a first-leg advantage after blunting Barcelona's attacking threat
While the visitors dominated possession in the first half, it was Chelsea who went closest to scoring
Hazard flashed an early shot over the bar while Willian hit the post twice with efforts from outside the box, striking the right-hand upright in the 34th minute and then hitting the left post with a snap-shot in the 41st minute
Hazard also volleyed over the bar before half-time, with Barca's only chance falling to Paulinho in the 16th minute when he headed wide
The game continued in the same pattern in the second half but it was Chelsea who broke the deadlock when Willian finished brilliantly, curling a shot into the bottom corner from the edge of the box
The goal looked as though it might be decisive on the night as Barcelona struggled to find a way through Chelsea's well-organised defence
But Barca seized upon Christensen's poor pass across his own box, with Andres Iniesta skipping away from Cesar Azpilicueta's diving tackle and then pulling back for Messi to finish expertly into the bottom corner
"I think we were very close to playing the perfect game
 I think we paid dearly for one mistake
 But as you know very well, against this type of player - like Messi, like Iniesta, like [Luis] Suarez - if you make a mistake you pay
 It's a pity because tonight at the end of the game we are disappointed with the final result
" "The good thing is that we managed to get an error out of them and we got an equaliser
 We go back to the Camp Nou happy
 I think the equaliser was very important
 They might be happy with the result and we have to be respectful of their style of play
 They pressed us very high and made life difficult for us
"Willian continued his fantastic recent form with another standout display
 He twice went close to scoring in the first half with shots that hit the post and left Marc-Andre ter Stegen rooted to the spot
But it was third time lucky as he shimmied away from Sergio Busquets in the 62nd minute and curled a fantastic effort into the bottom corner
Chelsea travel to Manchester United on Sunday and then go to Manchester City a week later, with both games live on 
 Barcelona host Girona in La Liga on Saturday and then go to Las Palmas on Thursday, March 1, with both fixtures again live on 
The second leg takes place at the Nou Camp on Wednesday, March 14
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>