Group A of the Champions League this year is one of the competition's many 'Groups of Death'.
The likes of European giants Atletico Madrid and Borussia Dortmund will be facing off against each other on the biggest stage.
Both sides were knocked out in the group stage last season and will be looking to progress through to the last 16, though they will face tough challenges in Monaco and Club Brugge.
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Goal takes a look at the rundown of the Group A fixtures ahead of the group phase start, as well as what to expect from each team and more.