MELBOURNE: Top-ranked Aryna Sabalenka is favourite to win a third Australian Open in four years but faces strong competition from a United States contingent led by Coco Gauff and defending champion Madison Keys.
World No 2 Iga Swiatek is another big threat while two-time Melbourne champion Naomi Osaka will hope to be in the mix when the first Grand Slam of the year begins on Sunday.
Keys stunned title-holder Sabalenka 12 months ago in a classic three-set final to win her first major title aged 29.
