Arsenal tied Atalanta, Atletico Madrid completed its comeback with a late winner and 10-man Barcelona lost despite Lamine Yamal's first Champions League goal.

Barcelona's Lamine Yamal, Kenan Yildaz of Juventus and Dortmund's Jamie Gittens feature in the best goals from the first round of Champions League games.

Harry Kane's four goals are the highlight of the first matchday, while Celtic and Borussia Dortmund join Bayern Munich in getting off to flying starts.

The UEFA Champions League begins this week, here's how to watch Real Madrid play Stuttgart in their first match of the season.

After match day one of the newly formatted Champions League, our writers answer the burning questions, provide analysis and break down performances.

The new Champions League format forces teams to go for the win, Atletico Madrid head coach Diego Simeone said after his side fought back from a deficit to grab a late 2-1 victory over RB Leipzig on Thursday.