Leading seeds progress in Melbourne
The leading seeds continued their smooth progress through the women's draw at the Australian Open with Angelique Kerber and Li Na both moving into round four.
Kerber downed American wild card Madison Keys and Li dropped just five games against Sorana Cirstea.
With all the attention surrounding title favourites Victoria Azarenka, Maria Sharapova and Serena Williams, the chasing pack have gone largely unnoticed but both women were impressive.
German Kerber, the fifth seed, was given some nervy moments by 17-year-old Keys before coming through 6-2 7-5 while Li, a finalist here in 2011, enjoyed a solid 6-4 6-1 win over Romanian Cirstea.
"Today was pretty good," said Li. "I felt more control on the court."
Li will next meet Julia Goerges, who overcame another Chinese player Zheng Jie 6-3 1-6 7-5.
Radwanska will take on Ana Ivanovic, who won the all-Serbian tussle with Jelena Jankovic. Much has been made of the rivalry between the two but Ivanovic insists it has been overblown.
"Our relationship is fine, it's really good," she said. "We had a really good week in Prague for the final of the Fed Cup. We were hanging out a lot, joking. It's nice, we have known each other for a while."
The former world number one knows she will have to raise her game when she meets the in-form Pole, who has won the last four of their seven meetings and she added: "She has matured a lot as a player. She has a style of game that doesn't give you very much and you have to really work for your points. Being patient is going to be key."
Kerber next plays Ekaterina Makarova, who stunned 11th seed Marion Bartoli 6-7 (4/7) 6-3 6-4, while the fourth-round line-up in the bottom half will be completed later on Friday with the winner of the evening session blockbuster between Sharapova and Venus Williams meeting either Valeria Savinykh or Kirsten Flipkens.