The world No. 5 prevailed, 3-6, 6-4, 7-6 (3), on Tuesday evening.

The American qualifier saved two match points before beating Arantxa Rus 6-2, 6-7(6), 7-6(6) in three hours and 43 minutes.

Before each day’s play in Melbourne, we’ll preview three must-see matches.

What to watch on the first day of fourth-round play, including Tsitsipas vs. Fritz, Sabalenka vs. Anisimova, Sinner vs. Khachanov and Rublev vs. de Minaur.

"It's a nice feeling winning matches," says the 22-year-old. "Being in that high-stress environment is unlike anything else. . . [But] I'm just here for the journey right now."

The defending champion put down the perfect scoreline against Lesia Tsurenko after coming within one game of a perfect match in the first round.

What to watch on Day 6 of the Australian Open.

Plus, Amanda Anisimova auctions off her art to raise money for charity at The Art of Tennis Player Party presented by Ted Dimond.

The former Roland Garros semifinalist might be saying "Go Sharks!" in the not-so-distant future.

As the tournament where they each had strong results rolls on, the two women revealed new additions to their respective families.