The defending champion Novak Djokovic has pulled out of the season-end tournament but the likes of Jannik Sinner and Carlos Alcaraz are expected to trigger an exciting battle for the title in Turin.

Bjorn Borg (1977-79) and Ivan Lendl (1980-82) both earned 13 or more top 10 wins in three consecutive seasons while in this age bracket, while Pete Sampras (1993-94) and Rafael Nadal (2008-09 ... more ...