Coman scored the decisive goal when Bayern beat Paris Saint-Germain 1-0 to claim their sixth European crown in Lisbon in August.
The France winger was prominent for Bayern again on Wednesday with the opening goal and a fine assist for Leon Goretzka in the first half against a sluggish Atletico.
Corentin Tolisso added a third after the break with a long-range strike before Coman put the gloss on the result with a brilliant individual goal.
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