Sixth-seed Jessica Pegula has advanced to the quarterfinals of the Doha Open with a 6-3, 7-5 victory over Daria Kasatkina.

The No. 5 seed is officially working with Davide Sanguinetti after the WTA announced it would continue to suspend former coach Stefano Vukov for breaching the tour’s Code of Conduct.

Pegula and Rybakina restored order after a slew of shock exits in Qatar, but No. 4 seed Jasmine Paolini wasn’t so lucky in her loss to Jelena Ostapenko.

The WTA confirmed that it had concluded an investigation into the coach’s potential breach of the Tour’s code of conduct and that his ban will remain in place.

Elena Rybakina’s coach Stefano Vukov remains banned by WTA after investigation - Concerns have been raised over several years ...

The Elena Rybakina coach controversy has sparked shockwaves after allegations of mistreatment, including claims of forced ...