Pep Guardiola admitted his players' confidence is at a low ebb after Man City threw away a three-goal lead with just 15 minutes to go to draw 3-3 at home with Feyenoord.
We've reached the midway point of the first installation of a league phase in the Champions League. So what have we learned about the new format?
Geovany Quenda, Sporting's new star, is being tracked by Man City and Man Utd. Here his old coach explains why...
Arsenal fell to a second consecutive defeat as Inter Milan beat them 1-0 at San Siro in the Champions League thanks to Hakan Calhanoglu's first-half penalty.
Aston Villa's perfect start to the Champions League campaign ends as Tyrone Mings concedes a bizarre penalty to hand Club Brugge a win.
Live updates as Aston Villa take on Club Brugge in the Champions League hoping to keep up their 100 per cent record.
When Kylian Mbappe finally left for Real Madrid, somebody had to step up at PSG. Bradley Barcola is the new hero in Paris and Next Up...
Declan Rice is in a race to be fit for Arsenal's Super Sunday clash with Chelsea, Mikel Arteta has revealed.
Incoming Manchester United boss Ruben Amorim laid down a marker as Sporting produced a stunning second-half comeback to beat Manchester City 4-1.
Does Brendan Rodgers' approach in the Champions League need to change after Celtic were thrashed 7-1 at Borussia Dortmund?
England's top two strikers are set to go head-to-head in the Champions League when Aston Villa face Bayern Munich - but how do Ollie Watkins and Harry Kane compare?
Celtic were taught a lesson by Borussia Dortmund in the Champions League as their winning run was halted in spectacular fashion with a 7-1 defeat.
David Raya's stunning double save from Mateo Retegui’s penalty kick earned a 0-0 draw for Arsenal against Atalanta in Bergamo.
Re-live the action from Arsenal's goalless draw with Atalanta in their opening game of the Champions League league phase.
Manchester City were held to a 0-0 draw by a spirited Inter side as the Premier League champions endured a frustrating start to their Champions League campaign.
It was a European night to remember for Celtic for the right reasons as they won their opening Champions League match for the first time, and in style.
Celtic started their Champions League campaign with intent as they swept aside Slovan Bratislava to win their opening match for the first time.
Harry Kane eclipsed Wayne Rooney's Champions League record with a hat-trick of penalties in a four-goal haul as Bayern Munich demolished Dinamo Zagreb.
Liverpool came from behind to beat AC Milan 3-1 as they returned to the Champions League in style in the San Siro.
Aston Villa cruised to a 3-0 win over Young Boys - and even had room to see two goals ruled out - as they crowned their Champions League debut with a fine victory.