Paris Saint-Germain led 3-0 at half-time and went on to win 4-2 at Manchester City, whose home game was their first since the Premier League verdict against them and marked Pep Guardiola's return to the stadium. Enzo Maresca said the match showed City are close to PSG's level, while Luis Enrique admitted luck went his side's way; PSG now have two wins from two and are being talked about as a possible dynasty.
Why it matters It was the standout fixture of the Champions League week and a measure of how far the defending champions currently sit above one of their richest rivals.
Manchester United's winless run reached five games with a 2-0 Champions League loss to Atlético Madrid, in which they conceded inside the first minute and finished with ten men after Leny Yoro was sent off. Lisandro Martínez then apologised for his criticism of the club's recruitment, saying he had spoken out of anger and frustration, and has been fined, with the club saying any disciplinary action will stay private.
Why it matters It is the latest flashpoint in a poor start to United's season and shows the dressing-room tension behind the results.
Real Madrid came back from 3-1 down at Roma, scoring three times in the closing stages to win 4-3 on José Mourinho's return to the club. Kylian Mbappé had levelled on his 100th Champions League appearance and Donyell Malen struck twice for Roma.
Why it matters Another of Madrid's trademark late comebacks, and a result with extra weight given Mourinho's history at Roma.
Paris Saint-Germain won 4-2 at Manchester City to make it two wins from two in the league phase, having led 3-0 at the break. Pep Guardiola, back at the Etihad Stadium for the first time since leaving at the end of last season, watched from the stands; Enzo Maresca said the game showed City are close to PSG's level, and Luis Enrique admitted luck went his way.
Why it matters It reinforces PSG, chasing a third straight crown, as Europe's benchmark and leaves City chasing the league-phase pace.
Real Madrid turned a 3-1 deficit into a 4-3 win at Roma by scoring three times in the final seven minutes. Kylian Mbappé levelled on his 100th Champions League appearance after Marten de Roon's opener, Donyell Malen struck twice for Roma, and José Mourinho took the blame for his side's earlier struggles on his return to the club.
Why it matters A comeback that saves Madrid from a damaging league-phase result and gives Mourinho a memorable night at his former club.
Martínez attacks United hierarchy after Atlético defeat
After Manchester United's 2-0 loss at Atlético Madrid, in which they conceded inside 53 seconds and had Leny Yoro sent off, Lisandro Martínez said the club had not invested enough in the squad and singled out director of football Jason Wilcox, before saying he had spoken out of anger and frustration. United are assessing his comments before deciding on possible disciplinary action, according to sources.
Why it matters It adds to the pressure on a struggling side and shifts scrutiny onto the club's recruitment and board.
After a 2-0 Champions League loss at Atlético Madrid — a goal down inside 53 seconds and with Leny Yoro sent off — defender Lisandro Martínez said the result was a mirror of the club and accused the hierarchy of failing to assemble a Champions League-quality squad, appearing to single out Jason Wilcox. Pablo Barrios and Ademola Lookman scored for the hosts.
Why it matters Open dissent from a senior player widens the spotlight beyond head coach Michael Carrick and onto United's recruitment.
Arsenal scored three times in a seven-minute second-half burst to beat Lille 3-0 and keep their winning start going, with substitute Bukayo Saka changing the game after Mikel Arteta's half-time adjustments. Viktor Gyökeres' flat hour before being withdrawn was flagged as a concern.
Why it matters Arsenal's bench is deciding matches, but the striker position remains the open question in an otherwise dominant run.
Bayern were held 3-3 by Norwegian champions Viking, with Harry Kane leading the comeback, and Olise's first senior sending-off giving the hosts a way back into the game. Olise has been handed a one-match ban.
Why it matters A dropped point against the group outsiders and a suspension for a key attacker complicate Bayern's campaign.
