American tennis player Madison Keys seeks a fourth straight win over a seeded opponent at the Australian Open, when she takes on No. 2 Iga Swiatek in Thursday’s semifinal round.

Iga Swiatek is dominating her Australian Open opponents the way no one has at Melbourne Park since Maria Sharapova in 2013.

Iga Swiatek doesn’t need any help. The women’s top seed at the Australian Open was on the right end of a missed call in her 6-1, 6-2 quarterfinal win over American Emma Navarro on Tuesday. With Navarro desperately trying to fight her way back into the match, she hit a drop shot that Swiatek scrambled to retrieve and was ruled to have done so.