The team return with the defending champion in the line up following a rousing solo victory from Michal Kwiatkowski in 2017. The Pole is back again this year in a bid to win the WorldTour event (March 3) for a record-equalling third time.
Team Sky have a number of cards to play on the famed sectors of gravel road, with the race day forecast looking set to make the weather a big factor on the ride to Siena.
Three Italians will ride on home soil, with Gianni Moscon and Salvatore Puccio both impressing at the race in the past. Leonardo Basso continues his debut pro season in a support role.
Fresh from a strong Classics Opening Weekend in Belgium, Lukasz Wisniowski will hope to continue his momentum, with Michal Golas also on hand to back up compatriot Kwiatkowski. Owain Doull completes the seven-man team for his second start at the race.