After weeks of qualification and months of gnashing teeth over future format changes, the most important and high-quality continental club competition in the world, the UEFA Champions League, begins group-stage play on Tuesday.
Somehow, this behemoth of a tournament almost snuck up on us, coming in on the heels of a particularly important international break, so let's set the table for everything you need to know before matches in Bern and Seville get the ball rolling on Tuesday.
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Most likely champions
There will be countless twists and turns along the way, but we already have a good idea of who the best clubs in the world are.