2023 Charleston

Charleston: Kasatkina defeats Keys in battle of former champions

No.3 seed Daria Kasatkina, the 2017 Credit One Charleston Open champion, came from a set down to beat 2019 champion and No.9 seed Madison Keys in the 2023 quarterfinals. The result was just Kasatkina's second win in 10 encounters with Keys; all previous nine had been on hard courts.