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Australian Open Day 8 photos: Nadal, Federer book spots in quarterfinals

Rafael Nadal breaks a sweat en route to victory. (Scott Barbour/Getty Images)


MELBOURNE, Australia -- Maria Sharapova is out. Roger Federer is in. And Redfoo is back.

That's what we learned on Day 8 of the Australian Open. Dominika Cibulkova, small in stature but big in game, pulled off the headline-grabbing upset of the day with her win over Sharapova. Federer played his best match of the young season to oust Jo-Wilfriend Tsonga, setting up a quarterfinal clash with Andy Murray.

As for Redfoo, it looks like he'll be here for a while. Victoria Azarenka threw down a statement win against Sloane Stephens. So, yeah. Best get used to the 'Foo.

Australian Open Day 8 recap

Here are some of our favorite photos from Day 8 at the Australian Open.

Roger Federer

Roger Federer: The Maestro was in full flight in his emphatic win over Tsonga. (Ryan Pierse/Getty Images)


Dominika Cibulkova: She nearly blew a 5-0 lead in the second set but recovered and won 3-6, 6-4, 6-1 to record her second victory over Sharapova at a major. (Greg Wood/AFP/Getty Images)


Simona Halep: No one had a better celebration than Halep, who defeated Jelena Jankovic 6-4, 2-6, 6-0 to make her first Slam quarterfinal. She's the first Romanian to make the quarterfinal here since Irina Spirlea in 1997. (William West/AFP/Getty Images)

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Sloane Stephens: She couldn't hit through Azarenka or out-defend her. Afterward, her agent said she had seen a specialist for her wrist the night before her match. (Clive Brunskill/Getty Images)


Rafael Nadal: The highs ... (Matt King/Getty Images)


Rafael Nadal: And the lows of his tough 7-6 (3), 7-5, 7-6 (3) win over Kei Nishikori. (Scott Barbour/Getty Images)


Kei Nishikori: The No. 17 played the best match of his career against a top player at a Slam and still came out with a straight-set loss. But he earned a lot of respect with how well he fought. (Clive Brunskill/Getty Images)

Grigor Dimitrov

Grigor Dimitrov: Welcome to the quarterfinals of a major, Mr. Dimitrov. He beat Roberto Bautista Agut 6-3, 3-6, 6-2, 6-4 to earn a chance against Rafael Nadal. (Renee McKay/Getty Images)