Inter maintained their perfect start to their Champions League campaign on Tuesday, thumping Slavia Prague 3-0 at San Siro in their second match.
Last season's runners-up prevailed thanks to a double by Argentina forward Lautaro Martinez and a goal by Denzel Dumfries.
After losing their opening match to holders PSG, Atalanta got their campaign off the ground, coming from behind to beat Club Brugge 2-1 at home.
Lazar Samardzic converted a penalty to pull the Bergamo side level after Christos Tzolis had put the visitors in front and Mario Pasalic grabbed a winner in the closing stages.
Italian champions Napoli entertain Sporting Lisbona in the competition later on Wednesday while Juventus visit Villarreal.
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