Wozniacki, Djokovic in Australian Open QF

Melbourne: Caroline Wozniacki came off second best in an encounter with a kangaroo earlier this week but bounced back at Melbourne Park to beat Latvia's Anastasija Sevastova 6-3, 6-4 and seal a spot in the quarterfinals on Sunday, just like Serb Novak Djokovic, who too booked his last-eight berth.

The Danish world number one told reporters she had been touring a wildlife park outside Melbourne with friends this week and approached a baby kangaroo lying on the grass, concerned it may need help.

As the 20-year-old discovered to her detriment, kangaroos can be fiercely territorial and she ended up with a scratch on her shin and a trip to the hospital.

Wozniacki was put on the backfoot early by 46th-ranked Sevastova, who broke her serve and marched to a 3-1 lead in the first set before the Dane settled and reeled off six games in a row.

Sevastova fought back to 4-4 after being a break down in the second set but notched two unforced errors to hand it straight back and Wozniacki sealed the match after whipping a cross-court forehand winner.

Wozniacki, who has not dropped a set at the tournament, will next play French Open winner Francesca Schiavone or two-times grand slam champion Svetlana Kuznetsova.

The Dane ran her own media conference earlier this week after being fed up listening to questions about her status as a world number one without a grand slam title.

Third seed Novak Djokovic also steamed into the last eight of the Australian Open with a comprehensive 6-3, 6-4, 6-0 thrashing of Spaniard Nicolas Almagro on Sunday.

The 2008 champion dominated the 14th seeded Almagro from the baseline, facing just one break point in the first two sets, then racing through the third in 28 minutes to seal an emphatic victory.

Djokovic fired 12 aces and 31 winners in the 106-minute contest and will meet either Czech sixth seed Thomas Berdych or ninth seed Fernando Verdasco in the quarterfinals.

The 23-year-old has been knocked out in the last eight for the last two years, losing to Andy Roddick in 2009 and Jo-Wilfried Tsonga last year.