Atalanta hosted Cagliari at the Gewiss Stadium where the Rossoblu ran out 2-0 winners to maintain their great run of form this season.
Cagliari took the lead after 32 minutes when Mario Pasalic deflected into his own goal from a Cagliari set-piece.
Minutes later, Josip Ilicic would see red for a kick on Charalampos Lykogiannis to make matters worse for Atalanta.
Cagliari would add their second to the game through Christian Oliva after a nice exchange with Giovanni Simeone who pulled it back for the Uruguayan, before he slotted home.
As a result, Cagliari are fifth in the Serie A table, now level on points with Atalanta, and have now gone nine games without losing in the top flight.