Aryna Sabalenka says she now knows "how it feels to play against me" as she battled past Nikola Bartunkova to reach the Berlin Open semi-finals.
Sabalenka has won 24 WTA Tour-level singles titles Aryna Sabalenka says she now knows "how it feels to play against me" as she claimed a much-needed comeback win over Nikola Bartunkova to reach the B