Carlos Alcaraz barrelled into the China Open quarter-finals on Sunday in just 56 minutes as 595th-ranked Zhang Shuai extended her historic run. Rain in Beijing played havoc with the schedule but four-time Grand Slam champion Alcaraz made rapid progress under the roof of the Diamond Court with a 6-1, 6-2 demolition of Tallon Griekspoor. The 39th-ranked Dutchman looked shellshocked. "I just want to keep going, to keep getting more and more wins," said Alcaraz after racking up his 200th tour-level victory. Alcaraz, the second seed behind Jannik Sinner, faces seventh-seeded Karen Khachanov next after an ominous warning of intent from the 21-year-old Spaniard.