Friday’s semifinal action at the WTA Qatar TotalEnergies Open in Doha will feature an underrated rivalry spotlighting the World No. 2, and a matchup between two unseeded heavy hitters.

There are four outstanding WTA Doha quarterfinal matches scheduled for Thursday. That includes four-time French Open champion Iga Swiatek’s battle against Elena Rybakina.

Sixth-seed Jessica Pegula advanced on Wednesday to the quarterfinals of the Doha Open with a 6-3, 7-5 victory over Daria Kasatkina. The American will next face Ekaterina Alexandrova, who beat Elise Mertens 6-4,