Two seeded players continued to roll closer to the Adelaide title, but they will next encounter unseeded competitors who are peaking at the last event of the summer Down Under. Meanwhile in Singapore, Hubert Hurkacz struggled to find his footing.

These are the Top 5 Photos from Thursday: (All photos Getty Images.)

1

Iga Swiatek

The 19-year-old is enjoying another great week Down Under in Adelaide. Swiatek looked dominate in her quarterfinal matchup against Danielle Collins as the world No. 18 wasn't afraid to put balls away and step into the court as she raced to a 6-2, 3-0 lead. Due to a back injury, Collins was forced to retire, giving Swiatek a ticket into the WTA 500 semifinal.

Top 5 Photos 2/25: 
Swiatek walks into 
Adelaide semifinals

Top 5 Photos 2/25: Swiatek walks into Adelaide semifinals

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2

Kaitlyn Christian and Sabrina Santamaria

The former USC Trojan duo made some noise in Adelaide by upsetting the No. 2 seeds Zheng Saisai and Duan Yingying, 7-5, 6-3, to continue their campaign. They will next battle No. 3 seeds and 2020 Roland Garros finalists Alexa Guarachi and Desirae Krawczyk for a spot in the final.

Top 5 Photos 2/25: 
Swiatek walks into 
Adelaide semifinals

Top 5 Photos 2/25: Swiatek walks into Adelaide semifinals

3

Hubert Hurkacz

After taking an opening round loss at the first major of the year, the world No. 30 wasn't able to regain any momentum in Singapore against Alejandro Davidovich Fokina. Despite the Spanish player rolling his ankle early in the second set, it seemed to affect Hurkacz more than Davidovich Fokina as he would fall, 7-5, 6-2.

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Top 5 Photos 2/25: 
Swiatek walks into 
Adelaide semifinals

Top 5 Photos 2/25: Swiatek walks into Adelaide semifinals

4

Coco Gauff

The American found herself in her fourth consecutive three-set battle in Adelaide. The teenager rose to the challenge to defeat countrywoman Shelby Rogers, 4-6, 6-4, 6-4, to secure her semifinal spot at the WTA 500 event. Gauff will square off with No. 2 seed Belinda Bencic next.

Top 5 Photos 2/25: 
Swiatek walks into 
Adelaide semifinals

Top 5 Photos 2/25: Swiatek walks into Adelaide semifinals

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5

Adrian Mannarino

Singapore's No. 1 seed didn't experience any hiccups in his opening round against Italy's Roberto Marcora. The Frenchman powered his way past the world No. 191, 6-3, 7-5, and will take on No. 6 seed Radu Albot.

Top 5 Photos 2/25: 
Swiatek walks into 
Adelaide semifinals

Top 5 Photos 2/25: Swiatek walks into Adelaide semifinals