The two best men's players in the world are reconfiguring the sport before their opponents' eyes. They don't know what to do about it

Carlos Alcaraz and Jannik Sinner are on a collision course for the Australian Open final and the Spaniard has admitted that the Italian is "in his head".

Carlos Alcaraz has confessed that Jannik Sinner lives “in his head” when practising. The young champions have already formed an exciting rivalry and split the Grand Slams between them last year. They could now take it to the next level at the Australian Open, where they are on a collision course for their first Major final showdown.