Pakistan, Sept. 11 -- Elena Rybakina ensured she will leave the US Open as the new world number one following her victory over China's Zheng Qinwen on Wednesday, while 2023 champion Coco Gauff recovered from a slow start to set up a semi-final clash with the Kazakh.

A day after Ben Shelton took out defending champion Carlos Alcaraz in the latest-finishing match at Flushing Meadows, Alexander Zverev wrapped up the action in double-quick time by thumping Botic van de Zandschulp 6-2 7-5 6-1. The German top seed will take on Karen Khachanov in the next round after the Russian went through when Alexander Blockx retired while trailing 6-2 7-5 3-2.

With Aryna Sabalenka (top seed), Rybakina (second), Jessica Pegula (third) and Gauff (fourth) al...