DID YOU KNOW?
68% of away sides to draw the first leg of a Champions League knockout tie 1-1 progress to the next round (23/34).
This will be the 14th meeting between these sides in the Champions League - only two fixtures have been played more often in the competition (Bayern v Real Madrid 18, Barcelona v Milan 15)
Six of the 13 previous meetings have ended in draws (46%) - of all fixtures to have been played at least 10 times, only Chelsea vs Liverpool has ended level more often (50% - 5/10)
Chelsea are unbeaten in their last eight Champions League games against Barcelona (W2 D6), with their last four visits to Camp Nou ending level
Chelsea have been shown four red cards in Champions League games against Barcelona, accounting for 33% of their total red cards in the competition (4/12)
Barcelona have only lost four of their 39 Champions League knockout games at home (W25 D10), with Liverpool the only English team to win there (2-1 in February 2007)
Chelsea have already won at Atletico Madrid this season - they could become only the third team to win away at two Spanish clubs in the same Champions League campaign after AC Milan (vs Barcelona and Deportivo in 2000-01) and Roma (vs Real Madrid and Valencia in 2002-03)
Barcelona have won 23 Champions League games against English clubs, more than any other side in the competition.
Six of Willian's nine Champions League goals for Chelsea have been from outside the box. Since he joined the Blues in 2013, he's scored more from distance than any other player in the competition
Lionel Messi scored his first ever Champions League goal against Chelsea at the ninth time of asking in the first leg. He's scored more goals vs English clubs than any other player in the competition (18)
Luis Suarez has failed to score in the last 881 minutes of play in the Champions League, his longest drought in the competition. His last goal came back in March 2017 against Paris SG
Eden Hazard has set up his teammates for a shot on 23 occasions in the Champions League this season, the joint-most alongside Neymar.