As she prepares for her seventh Australian Open final, Serena Williams still looks unstoppable.

Serena Williams underlined the difference in class and power between her and the rest of the women's field with a 6-0 6-4 demolition of fourth seed Agnieszka Radwanska today to reach her seventh Australian Open final. "It will be a good match", said Williams, the defending champion. "But otherwise I didn't really think that I was playing bad".

Victory would see the number one seed draw level with Steffi Graf's Open era record 22 grand slam titles and put her within two of Margaret Court's all-time best 24.

Federer said he wasn't surprised by Djokovic's early blitz.

The tiebreaker will be tricky.

Williams has won every semifinal she's contested at Melbourne Park, and gone on to win the title each time.

The world number one flaunted the large diamond ring during her dominant Australian Open semi. "I felt like, 'All right, I didn't make those shots, but if I had made those shots, I probably would have won that game.' I just clung on to that and knew I could play better". "There's a lot of tension".

Kerber ended Sydney-born British player Johanna Konta's surprising run with a 7-5, 6-2 semifinal win to reach her first Grand Slam final.

If she can sweep aside Kerber in straight sets in the decider, it will mark the first time Williams has won the year's first grand slam without losing a set.

Williams is 8-0 against Radwanska, including their meeting in the 2012 Wimbledon final.

Sharapova has not beaten Williams since back-to-back victories in 2004, when she led their rivalry 2-1.

"When I play her, I know automatically I have to step up my game", Williams said.

It meant the five-time Grand Slam winner's demoralising jinx against one of the greatest players ever remains intact.

Sharapova had a career-high 21 aces In her previous win against No. 12 Belinda Bencic.

Sharapova never finds a way to hurt Williams.

She has played her eight times since 2008 and lost the lot, taking just one set along the way.

"Serena is really showing her great tennis on all the Grand Slams".

Williams appears nearly certain to at least join Court atop the list, if not exceed her and then some.

"It's motivating because she's at a different level".

"You saw that when she served for the match, lost her serve, but came back to beat Ekaterina Makarova 8-6 in the third set to make the quarter-finals".

Federer also has some inspiration in his next match against Djokovic, namely the recent losses. "I was able to do everything that I needed to do", the 34-year-old American said.

Despite not wanting to tempt fate, Williams added she did not want to repeat last year's memories of the U.S. Open, tacitly sending Kerber a message she better be ready for a similar onslaught that Radwanska faced.

Early in the set, points were short.