Kostyuk, the world number 39, had warned she would not shake hands with Russian and Belarusian players due to the ongoing war in Ukraine – a stance she and other Ukrainian athletes have stuck to since Moscow’s forces invaded their country last year, with support from Belarus. The 20-year-old from Kyiv duly avoided her opponent on Court Philippe Chatrier, the French Open’s showpiece arena, after losing 6-3 6-2 in a lopsided contest with world number two Aryna Sabalenka. But she was taken aback by what followed. A significant part of the crowd booed and whistled at her as she skipped...