American teenager Coco Gauff successfully defended her Auckland Classic title by battling back from a set down to defeat Elina Svitolina.
The US Open champion triumphed 6-7 (4-7) 6-3 6-3 to record her seventh win in eight career WTA singles finals so far.
Nineteen-year-old Gauff has now won 29 of her past 33 singles matches.
Elsewhere, Elena Rybakina claimed the Brisbane International title with a dominant straight-set win over Aryna Sabalenka.
In a repeat of last year’s Australian Open final, in which Sabalenka fought back from a set down to win her first major title, Rybakina swept the Belarusian aside 6-0 6-3.
In the men’s doubles final in Brisbane, Briton Lloyd Glasspool and Dutch team-mate Jean-Julien Rojer won a match tie-break to prevail 7-6 (7-3) 5-7 12-10 against German top seeds Tim Putz and Kevin Krawietz.
The men’s singles final will see Danish 20-year-old Holger Rune take on Grigor Dimitrov in a meeting between the top two seeds later on Sunday.
The Australian Open, the first Grand Slam of the year, starts in Melbourne on 14 January.
More to follow.