Chelsea survived a tense second-half to secure passage into the third round of the EFL Cup with a 3-2 victory over Bristol Rovers at Stamford Bridge.
A strong Blues line-up numbering five first-team regulars including Pedro and Nemanja Matic laboured against their League One opponents despite twice claiming two-goal leads as Michy Batshuayi scored either side of Victor Moses' goal.
Peter Hartley and Ellis Harrison, who fired the only goal of the second-half, gave Rovers hope of a famous upset against the Premier League giants and on more than one occasion they threatened an equaliser.
But Eden Hazard and Oscar came on to reinforce Chelsea and the visitors eventually ran out of steam having given everything in pursuit of a prized scalp.