As much as any top player, Sinner has been able to expose De Minaur’s lack of first-strike weaponry. The Aussie’s strength is his scrambling and counterpunching, but Sinner serves too well, hits too hard, places the ball too precisely for his defense to be effective. De Minaur hasn’t found a way to hurt, rattle, of disrupt him.

Jannik Sinner disposed of Holger Rune in four sets in the fourth round of the Australian Open as the World No. 1 player looks to make it back-to-back Grand Slam