Ukrainian Dayana Yastremska says it has been emotionally challenging to play events such as the Australian Open while her country is in the midst of the conflict with Russia.

After advancing to the Australian Open quarterfinals for the first time in her career, Yastremska was reluctant to comment on the ongoing Russia-Ukraine war when she fronted her post-match media conference on Monday.

But Yastremska revealed she had found ways to cope with the emotional turmoil she had been experiencing.

"It's tough emotionally to play, but the worst thing is you feel like you were already accepting this, what is happening," Yastremska said.

"And people are starting to forget about what is going on … but I don't really want to talk about it right now.

"But just in general, it's tough to play, but after two years you get to manage already how to deal with all the emotions and with everything that is going on inside."

Yastremska added: "The war, of course, it's affected us, well, a lot. Because you cannot go home like you wanted, when you wanted, like it was before. You always read the news. You always see the videos."

The 23-year-old, who qualified for the main draw at Melbourne Park, defeated Belarusian 18th seed Victoria Azarenka 7-6 (8/6), 6-4 in the fourth round.

She was asked whether she felt additional pressure playing an opponent from Belarus, given its support of Russia in the war.

But Yastremska refused to speak at length, other than to say: "I'm sure you know how it is for us, for Ukrainians to play against Russians and Belarusian [opponents]."

Yastremska joins countrywoman Marta Kostyuk as a quarterfinalist in what is the first time Ukraine has had two players reach this stage at the Australian Open.

Ukraine was perhaps unlucky not to have a third player progress, with 19th seed Elina Svitolina forced to retire injured after just three games in her fourth-round match against Czech Linda Nosková.

Kostyuk, speaking on Sunday after she defeated Russian Maria Timofeeva 6-2, 6-1 in the fourth round, said she found the past two years "very difficult".

But she felt she had "grown a lot as a person" during that time.

"If there was never a war in my life, I don't think I would be able to grow this much as I grew in the last two years," Kostyuk said.

Kostyuk said she was proud a record three Ukrainian women had made the fourth round in Melbourne.

"I think it just shows that there is no limit in human possibilities withstanding stress and all around it," she said.

Yastremska also felt pride in what the Ukrainian women had achieved at the tournament.

"I'm proud of Marta as well and I'm proud of us, of Ukrainians, and we are showing good results," she said.

"She had tough matches. She also had to deal with playing with Russians.

"I think it's great that we are here."

Yastremska, ranked 93 in the world, will play unseeded Nosková in the quarterfinals.

Kostyuk faces reigning US Open champion and fourth seed Coco Gauff for a place in the semifinals.