An early goal from Ousmane Dembele and a late Lionel Messi penalty gave Barcelona a 2-0 win away to Juventus in the Champions League after Alvaro Morata had three goals disallowed for offside for the Serie A side.
Dembele struck with a deflected shot in the 14th minute for a Barcelona side smarting from Saturday's home defeat by Real Madrid and rocked by the resignation of club president Josep Maria Bartomeu on Tuesday.
Juventus, still missing Cristiano Ronaldo after he tested positive for Covid-19 two weeks ago, were frustrated as Morata had two goals disallowed in the first half and a third after half-time when VAR showed that his heel was offside.
Juve's frustration was complete as defender Merih Demiral was sent off in the 85th minute and Messi settled the match with a stoppage-time penalty to leave Barcelona top of Group G with six points and Juventus on three.
The other game in Group G saw Ferencvaros come from two goals down to draw 2-2 with Dynamo Kyiv as Franck Boli equalised in the final minute.
Super-sub Marcus Rashford’s first Manchester United hat-trick inspired Ole Gunnar Solskjaer’s men to a 5-0 statement win against last year’s semi-finalists RB Leipzig.
A week on from their deserved triumph at finalists Paris St Germain, United continued their 100% start to Group H by securing a first home win of the season in some style.
Rashford was the hero in the French capital and was key again on Wednesday, netting a treble off the bench as Anthony Martial and Mason Greenwood also scored against Bundesliga leaders Leipzig.
PSG got off the mark in Turkey with a 2-0 win against Istanbul Basaksehir thanks to Moise Kean’s second-half double, although Neymar went off injured.
Chelsea delivered a commanding performance to seal an emphatic 4-0 win at Krasnodar.
Callum Hudson-Odoi, Timo Werner, Hakim Ziyech and Christian Pulisic all found the net after Jorginho had seen a penalty saved as the Blues eased to their first Group E victory in Russia.
The other game in Group E saw Europa League champions Sevilla win 1-0 at home against Rennes thanks to Luuk de Jong’s strike early in the second half.
Jadon Sancho scored from the penalty spot and Erling Haaland was on target in injury time as Borussia Dortmund gained their first points in Group F with a 2-0 victory over Zenit St Petersburg, who have now lost both of their matches.
Club Brugge and Lazio are both on four points, one ahead of Dortmund, after sharing a 1-1 draw. Hans Vanaken’s spot-kick cancelled out Joaquin Correa’s opener for the visitors.