Qarabag, thrashed 6-0 in the reverse fixture at Stamford Bridge in September, started well in front of their noisy home support but were left facing a huge challenge when captain Rasad Sadiqov was sent off for bringing down Willian in the penalty area. A little bit of contact. Qarabag out together a nice passing move and then get a pit of luck, a Medvedev's heavy touch ends up sliding through to Michel, and then it's Chelsea who get the luck as Michel beats Courtois and rattles the crossbar.
All the while, Hazard has been raising the bar at Chelsea. Hazard takes the penalty and, after a slight pause in the run-up, confidently sends the goalkeeper the wrong way.
After a summer of uncertainty in which he seemed open to the idea of being reunited with former Chelsea boss Jose Mourinho at Old Trafford, Willian appeared to have lost his way. That's an excellent team goal.
Conte's team struck for a third time in the 73rd minute when Gara Garayev conceded a penalty with a tug on Willian.
Eden Hazard reacts to Chelsea's 4-0 win over Qarabag
The Blues were not content with leaving the result at 3-0, having seen their first meeting ended at twice that scoreline, and Willian took it upon himself to make sure it did not finish that way.
Conte resisted the temptation to make changes at half-time but Chelsea looked keen to kill off the contest as soon as possible, with Sehic making a good save to deny Pedro one-on-one after a fine lofted pass from Fabregas. Willian picks the ball up 35 yards from goal, turns, runs at the defence and then smashes the ball into the top corner. Subs: Diniyev 5, Yunuszade n/a, Quintana n/a.
But five minutes to the stroke of full time, William netted his second of the night to ensure Chelsea reach a 14th Champions League last 16 in their last 15 appearances in the elite league.
Unused subs Caballero, Christensen, Sterling, Drinkwater, Bakayoko.
Speaking on BT Sport, Chelsea's all-time leading scorer Lampard, who netted 211 goals for the Blues, said: "World class for me is affecting games at Champions League and global level over a period of time and Hazard is certainly in that bracket". United should still go through, and will probably feel it was the better side even here, but the second-half laxity invited the defeat.
Former Wimbledon champion Jana Novotna has died, aged 49
Former British number one Jo Durie paid tribute to Jana Novotna's competitive streak following the Czech's death from cancer. As her "true friend" Martina Navratilova said on social media on Monday: "Jana was an unbelievable woman".