Agnieszka Radwanska cruised into the quarter-finals of the Australian Open with a straight-sets win over former World No 1 Ana Ivanovic.
Radwanska stormed to a 6-2, 6-4 victory over the Serbian, and will play Chinese sixth seed Li Na for a place in the semi-finals.
Radwanska is yet to lose a set - let alone a match - this year, having won the warm-up tournaments in Auckland and Sydney, and she is viewed by many pundits as the most likely player to stop Serena Williams from winning the final.
First though she will have to overcome Li in the last eight, and the Chinese star, a finalist two years ago, had to survive a nervy first set tie-break before beating 18th seed Julia Goerges 7-6 (8-6) 6-1.
"If I had lost the first set it could have been another story," Li said. "I just kept going point by point, not thinking too much."
Four of the top 10 women have already packed their bags at Melbourne Park while fourth seed Radwanska admits she is enjoying herself after chalking up her thirteenth straight victory this year.
"Well, what can I say? I'm just very happy that I can play at a very high level," she said. "I hope I can keep going three more."
Radwanska - whose ambition is to become Poland's first Grand Slam winner - made just four unforced errors to the wayward Serbian's 34 and saved five break points in the second set before sealing victory with her seventh ace after 70 minutes.
Her frenetic all-court game on a cool summer evening at Rod Laver Arena left Ivanovic in little doubt the Pole could go all the way at Melbourne Park.
"I think she definitely can," she said. "She's a player, it's no secret, who doesn't make too many winners, but she has good hands. She can really get the opponents to feel a little awkward make you go for too much. That's her strength."
Radwanska beat Li in two tight sets in Sydney but said: "It's never easy playing against her. She's a very consistent player and moving very well, serving well. For sure I really have to play my 100 per cent to beat her."