Andrea Petagna earned Atalanta a point against Fiorentina with his first Serie A goal since September, but Nikola Milenkovic saw red.
This was a head-to-head for European places and came just three days after the hosts played a thrilling 3-2 Europa League loss to Borussia Dortmund.
Gian Piero Gasperini therefore rotated his squad and the Viola broke through first with Milan Badelj making the most of a poor Pierluigi Gollini parry.
Petagna broke his goal drought with a strong header on Papu Gomez’s free kick.
Both sides had chances, but visiting defender Milenkovic received two yellow cards in quick succession.
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