Two-time Australian Open champion Sabalenka will take on Varvara Gracheva or 17-year-old Mirra Andreeva for a place in the semi-finals.
Second seed Sabalenka, a semi-finalist in Paris in 2023, has made at least the last four at her past six Grand Slams and is expected to be Iga Swiatek's toughest rival in the Pole's bid for a fourth French Open title.