Belenenses 0-4 Fiorentina Giuseppe Rossi rounded off the scoring late on with his first goal since May 2014 as the Viola cruised past their Portuguese hosts.
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- Fiorentina get off the mark in Group I with 4-0 defeat of Belenenses
- Portuguese hosts lose for first time in six European contests this season
- Federico Bernardeschi and Khouma Babacar score in first half
- Giuseppe Rossi nets late fourth – his first goal since May 2014
- Next games: Basel v Belenenses, Fiorentina v Lech (22 October)