Spain's Paula Badosa and Greece's Maria Sakkari won their quarterfinal matches Thursday to advance to the last four at the BNP Paribas Open in Indian Wells, Calif. Badosa, the defending champion and No. 5 seed, took down No. 21 seed Veronika Kudermetova of Russia 6-3, 6-2. The sixth-seeded Sakkari got by Kazakhstan's Elena Rybakina, the No. 17 seed, 7-5, 6-4. Badosa and Sakkari will battle in one semifinal match at Indi