Jonathan Jurejko
BBC Sport in Melbourne

Shaking in his chair and more pale than usual, Jannik Sinner looked a real mess during his win over Holger Rune on Monday.

Morning after the Christmas party vibes. Sinner certainly wouldn’t have been on the lash.

Rumours have been swirling around Melbourne all day about his physical condition, but he looks fresh enough as he wanders in the underbelly of Rod Laver Arena and kicks a ball with his fitness trainer in a warm up.

Proof will be in the pudding. De Minaur, a Duracell Bunny of a player, is bound to be testing out his condition.