FT: Manchester United 3-0 Basel
Sub Fellaini, Lukaku & Rashford
FT: Chelsea 6-0 Qarabag FK
Pedro, Zappacosta, Azpilicueta, Bakayoko & Batshuayi (2)
FT: Celtic 0-5 PSG - Neymar, Mbappe & Cavani (2), Lustig own goal
FT: Barca 3-0 Juve in pick of other ties
Neymar (19 mins)
Unhappy natives at Celtic Park as they want a foul at one end, PSG counter at lightning speed, Neymar is in behind the youngster Anthony Ralston and tucks it home with ease.
Image source, AFPChelsea 1-0 Qarabag
Almost a second for Chelsea as Michy Batshuayi follows up a Willian effort to slam a shot into the side-netting. The Blues are well on top, as you'd expect.
Bayern Munich are leading at home to Anderlecht courtesy of a Robert Lewandowski penalty. The Belgian club are also down to 10 men after midfielder Sven Kums was shown a red card.
Winger Gelson Martins finds the net for Sporting Lisbon who have now doubled their lead away to Olympiakos.
Image source, Getty Images
Manchester United 0-0 Basel
Paul Pogba may be done here. He has pulled up with an injury and has already signalled to the bench.
Image source, AFPManchester United 0-0 Basel
Simon Stone
BBC Sport at Old Trafford
Absolutely throwing it down here but both managers are almost a permanent presence in their respective technical areas.
Basel have brought around 1,000 fans with them to Old Trafford and they are making plenty of noise.
Celtic 0-0 PSG
Edinson Cavani has the ball in the net from Neymar's low cross - he's flagged for offside and that was close. Very close indeed.
Manchester United 0-0 Basel
Chris Waddle
Ex-Spurs and England winger on 5 live Sport
Lukaku has looked after the ball well which is normally one of his faults with his back against the goal.
Image source, ReutersChelsea 1-0 Qarabag
Gary Cahill continues his somewhat clumsy start to the season with a hefty challenge on Pedro Henrique - he's booked.
Manchester United 0-0 Basel
Ah he should score! That's good football from the hosts as they find Juan Mata inside the area, he has the vision to pick out Henrikh Mkhitaryan in the middle, he's under it but can't control his header and that's over.
Image source, AFPBarcelona 0-0 Juventus
Will either of these two be in the final come May? It's Juve who have made the better start, Miralem Pjanic having a shot well saved from 20 yards.
Image source, AFPManchester United 0-0 Basel
It's all a bit slow from United but that's a lovely move, Juan Mata finding Ashley Young in the area but his low cross is dealt with. Basel have all 11 behind the ball.
Chris Waddle
Ex-Spurs and England winger on 5 live Sport
Manchester United are not doing enough. They're not moving the ball quickly enough. It's very easy for Basel to play against.
Celtic 0-0 PSG
Celtic have their first effort on goal and Celtic Park erupts! Olivier Ntcham drags a shot harmlessly wide from range, decent connection but it was always heading wide.
Chelsea 1-0 Qarabag
The visitors are now having their first real spell of possession as we tick past the 10-minute mark.
Image source, AFPManchester United 0-0 Basel
It has been all Manchester United so far, but Basel now win a corner off the heels of Victor Lindelof. There was a nasty challenge from Ashley Young there too, which went unpunished.
An early goal for Chelsea and Pedro but the first goal of this season's Champions League went to ... drum roll please ... Seydou Doumbia of Sporting Lisbon.
The Ivorian headed in from the centre of the box to give his side the lead away to Olympiakos.
Image source, ReutersCeltic 0-0 PSG
It's a bright start from the big spenders - a great ball in from the right is almost touched in by Edinson Cavani but he can't quite reach it.
Pedro (6 mins)
Qarabag have had as tough a start as you'd expect. Chelsea take a corner like a hockey penalty corner, Willian teeing up Pedro on the edge and he fires into the roof of the net. Sean Kerly would be proud of that one.
Image source, ReutersChelsea 0-0 Qarabag
Cesc Fabregas has a corner well cleared as Chelsea make a bright start. Marcos Alonso then has a shot pushed away from the edge of the area.
Manchester United 0-0 Basel
United work the ball in behind the Basel back three and Romelu Lukaku earns a corner. From the corner, Lukaku has a powerful shot blocked well by Manuel Akanji...
Image source, Reuters