Jessica Pegula, world No. 3, defeated Paula Badosa 6-3, 7-6 (8/6) in the quarterfinals of the Charleston tournament on Friday.

Pegula will face the holder of the title, Swiss No. 11 Daria Kasatkina, in the semifinals. Tunisia's Ons Jabeur, who took advantage of Anna Kalinskaya's forfeit in the quarters, will face another Russian, 6-7 (5/7), 6-4,6-2.