No. 19 seed Madison Keys of the U.S. takes on No. 2 seed Iga Swiatek of Poland in a women's semifinal match on Thursday. Check out all the info.

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.

MELBOURNE, Australia (AP) — Not that Iga Swiatek needs the help during her dominant run through the Australian Open so far, but she did get the benefit of a no-call when she failed to reach a ball hit by her opponent Emma Navarro before it bounced twice Wednesday, renewing the debate over the use of video reviews in tennis.