The two best players in women's tennis will go head-to-head in a dream Australian Open final on Saturday as Maria Sharapova meets arch nemesis Serena Williams.
The Russian will head into the Melbourne contest desperate to break a 10-year jinx against the top seed and world No 1 who holds a major psychological advantage.
Both players came through their respective semi-finals to renew an intense rivalry between two of the greats of the modern era with 23 Grand Slams between them - 18 for Williams and five for Sharapova.
The statistics heavily favour the experienced American who has a daunting 16-2 record over Sharapova.
Since 2005, the American's winning streak is 15-0, including straight sets wins over Sharapova in the Australian and French Open finals (2007 and 2013), as well as the gold medal match at the 2012 London Olympics.
Williams could not resist a dig when asked this week about her last loss to Sharapova in Los Angeles 11 years ago, replying: "She was 17, super young and I think I was basically serving under hand."
The 33-year-old also spoke of the multiple major champion in terms more often used for promising rookies, saying: "She wants to improve her game, she wants to take it to the next level".
Outstanding
Despite the ominous statistics, Sharapova has been in outstanding touch and blew away fellow Russian Makarova 6-3 6-2 on a blustery Thursday afternoon on Rod Laver Arena.
She is now in her fourth Australian final, having won in 2008.
Williams was made to work harder by rising American teenager Keys, who fought to the end, saving eight match points.
Coached by former US great Lindsay Davenport, Keys forced Williams to a first set tiebreak before her illustrious opponent took charge to win 7-6 (7-5) 6-2 to make her sixth Australian decider.
In reaching the final at 33, she became the oldest player to make the Australian Open decider in the Open Era, surpassing Chris Evert.
It also ensured that she keeps the No 1 ranking she has held for more than 100 weeks. Sharapova could have claimed the accolade if she had won the title and Williams had failed to make the final.
In another warning sign for Sharapova, her rival has won all five of the previous finals she has made in Melbourne.
"I'm excited. I love playing her. I look forward to it," said Williams, who would take her Grand Slam tally to 19, overtaking Chris Evert and Martina Navratilova on the all-time Open-era list to out her within striking distance of Steffi Graf's 22.
Stranglehold
Williams has made the Australian Open final five times previously and won every time, including a 2007 victory over Sharapova and said that against Sharapova she needed to avoid the slow starts that have dogged her tournament.
"It's going to be important for me to get off to a good start, I think. With that being said, if not, I'm going to be ready to fight," she said.
Sharapova, 27, dismissed Williams' psychological stranglehold.
The reigning French Open champion said she was concentrating on her form during this year's tournament rather than past losses to Williams.
"I think my confidence should be pretty high going into a final of a Grand Slam no matter who I'm facing and whether I've had a terrible record, to say the least, against someone," she said.
"It doesn't matter. I got there for a reason. I belong in that spot. I will do everything I can to get the title."
Quizzed on why her record against Williams was so poor, given her strength against other players on tour, Sharapova said she probably over-reacted to the American great's power and aggression.
"I think that's always made me a little bit too aggressive, maybe going for a little bit more than I had to," she said.
"She's great at making players hit that shot that you don't necessarily have to go for - maybe going for a little too much, going on the line.
"It's been a really difficult match-up for me, but I'm a competitor... I'll go out and do everything I can to try to change that result around."
Desperate
Sharapova admits her results against Williams are "terrible" and is desperate to break the sequence as their feud - which at times has seen the pair trade personal barbs - flares again on Saturday at Melbourne's Rod Laver Arena.
Known for her steely composure on court, Sharapova admitted that Williams is one of the few players who riles her up.
"I think that's always made me a little bit too aggressive, maybe going for a little bit more than I had to," she said.
"She's great at making players hit that shot that you don't necessarily have to go for... it's been a really difficult match-up for me, but I'm a competitor. I'll go out and do everything I can to try to change that result around."
Williams cut short a training session after just five minutes on Friday, suffering from a hacking cough, but later returned for a hit-out.
"Again. I have to win," said Williams. "Everyone's expecting me to win. But we'll see. She's playing unbelievable. She was almost out of the tournament and has been playing better every single match. It's impressive."
Meanwhile, Sharapova said she did not expect her rival's condition to have any bearing on the final, saying she overcame similar snuffles when she won the title at Roland Garros last year.
"I came into the French Open last year being quite sick. Once you're out there, I don't think you think about anything but what's in front of you," she said.
Head-to-head: Williams leads 16-2 (tournament, winner, surface, round, score)
2014
Miami - Williams - hard - (SF) - 6-4 6-3
Brisbane - Williams - hard - (SF) - 6-2 7-6 (9-7)
2013
French Open - Williams - clay - (F) - 6-4 6-4
Madrid - Williams - clay - (F) - 6-1 6-4
Miami - Williams - hard - (F) - 4-6 6-3 6-0
Doha - Williams - hard - (SF) - 6-3 6-2
2012
Istanbul - Williams - hard - (F) - 6-4 6-3
London Olympics - Williams - grass - (R16) - 6-0 6-1
Madrid - Williams - clay - (QF) - 6-1 6-3
2011
Stanford - Williams - hard - (QF) - 6-1 6-3
2010
Wimbledon - Williams - grass - (R16) - 7-6 (11-9) 6-4
2008
Charleston - Williams - clay - (QF) - 7-5 4-6 6-1
2007
Miami - Williams - hard - (R16) - 6-1 6-1
Australian Open - Williams - hard - (F) - 6-1 6-2
2005
Australian Open - Williams - hard - (SF) - 2-6 7-5 8-6
2004
Los Angeles - Sharapova - hard - (F) - 4-6 6-2 6-4
Wimbledon - Sharapova - grass - (F) - 6-1 6-4
Miami - Williams - hard - (R16) - 6-4 6-3
Los Angeles - Sharapova - hard - (F) - 4-6 6-2 6-4
Wimbledon - Sharapova - grass - (F) - 6-1 6-4
Miami - Williams - hard - (R16) - 6-4 6-3