Naomi Osaka and Petra Kvitova meet in the Australian Open final on Saturday amid high emotional stakes and with the world number one ranking on the line.
Osaka, who received her US Open trophy in tears, and to boos, after Serena Williams' meltdown, can become the first player since 2001 to follow her maiden Grand Slam title with another.
Kvitova, meanwhile, is in a first major final since being stabbed in 2016.
The winner will replace Simona Halep as world number one.
The Melbourne match between fourth seed Osaka and eighth seed Kvitova, who have never met before, starts at 08:30 GMT and you can follow the match live on the BBC Sport website and BBC Radio 5 live.