Jannik Sinner became world number one without knowing it as he reached the semi-finals of the French Open for the first time after beating Grigor Dimitrov 6-2 6-4 7-6 (3).
Defending champion Novak Djokovic's knee injury has forced him to withdraw from the French Open.
Defending champion Iga Swiatek stayed on easy street as she sailed into the semi-finals of the French Open with a straight sets win over Marketa Vondrousova.
Coco Gauff booked her place in the French Open semi-finals after enduring a tough challenge from Ons Jabeur.
Alex De Minaur was roared on by his young superfan as he upset Daniil Medvedev to reach his first French Open quarter-final.
Novak Djokovic will have a scan on Tuesday to determine if he can continue the defence of his French Open title.