A last-gasp header from Giorgio Chiellini's snatched Juventus a well deserved away victory 3-2 against Cagliari on Sunday to stay on top of the Serie A table. After a scoreless first half, the audience were given a great show with the ball going into the back of the net five times. France hitman David Trezeguet, 54, and Alessandro Del Piero, 76, put the Italian giants ahead but Cagliari managed to level the score twice with spot-kicks from Pasquale Foggia, 56, 81. But Chiellini's had the last word with an injury-time header connecting with Mauro Camoranesi's free kick to bring back home three precious points. The game ended with 10 men on the pitch for each side as Juve's Jonathan Zebina and Cagliari's Cristiano Del Grosso were sent off. AS Roma notched a second straight win beating Siena 3-0 courtesy to Alberto Aquilani, 17, French winger Ludovic Giuly, 82, and striker Francesco Totti ,89, goals. European champions AC Milan will host Fiorentina on Monday.