You Should Know: Ash Barty
You do not want to face the Aussie on red clay.
Aryna Sabalenka initially thought the boos and derisive whistles coming from the French Open crowd were directed at her after a first-round victory.
Sabalenka faced tough questions regarding her statements about sport and politics while Kostyuk was questioned about her decision not to shake hands with the No. 2 seed on Sunday.
The No. 2 seed rallied from an early break down to defeat Kostyuk in straight sets on Court Philippe-Chatrier after the two exchanged words in their pre-tournament press conferences.
This match-up has given the No. 8 seed trouble in the past, with the Czech being 2-0 in their head-to-head history on clay.
The 22-time major champion took Kids' Day to heart Saturday at Roland Garros on Court Suzanne Lenglen.