Chelsea head into their crucial last-16 seond leg clash with Barcelona having not lost to the Catalan giants in their previous eight games.
Two weeks ago, the Blues battled admirably against Barca at Stamford Bridge, even taking the lead through Willian's superb strike.
However, the LaLiga side pounced on a defensive mistake by Andreas Christensen to allow Lionel Messi to score what could rpove to be a crucial away goal.
68% of away sides to draw the first leg of a Champions League knockout tie 1-1 progress to the next round, so Chelsea will have to draw on the spirit of the side who knocked Barcelona side out in the semi-finals in 2012.