Sassuolo's perfect start to the campaign ended on Sunday with a 2-2 draw at home to Atalanta.Atalanta goalkeeper Marco Sportiello saved Nicola Sansone's spot-kick in the sixth minute.Mauricio Pinilla put Atalanta ahead on 13 minutes with an overhead kick to beat Sassuolo goalkeeper Andrea Consigli.Francesco Magnanelli equalised in the 22nd minute with a 30-yard drive but 11 minutes later, Pinilla struck past Consigli to put Atalanta back in front.Seven minutes later, Sassuolo equalised through Antonio Floro Flores's 25-yard volley.Shortly after the re-start Pinilla was handed his marching orders after earning his second yellow card for a foul on Federico Peluso.Sassuolo's Sime Vrsaljko was sent off with six minutes remaining for a second yellow card after bringing down Maxi Moralez in the area.Moralez saw his resulting penalty saved by Consigli.ends