Jannik Sinner is now assured of remaining in top spot until after next year's Australian Open.
Australian tennis star Nick Kyrgios says he's driven to "shut up" his critics by winning a Grand Slam singles title.
Jannik Sinner set up a blockbusting US Open quarter-final with Daniil Medvedev in a repeat of the Australian Open final.
Australian Open champion Jannik Sinner breezed through the opening round of the BN AMRO Open in Rotterdam on Wednesday.
Darren Cahill, coach of Jannik Sinner, has backed the young Italian to lead a revolution in tennis alongside the likes of Carlos Alcaraz.
With his Australian Open title, Jannik Sinner has finally arrived on the grand slam stage.