Australia’s Olivia Gadecki goes up against Argentina’s Nadia Podoroska, before Alex de Minaur takes on Tomas Martin Etcheverry. Follow all the action:

Alex de Minaur swept past Tomas Martin Etcheverry to win his first match of the season Saturday but it was not enough to prevent Argentina upsetting hosts Australia at the United Cup, while Switzerland beat France.

Australia has suffered an opening-night 2-1 loss at the United Cup, with Alex de Minaur notching the team’s only victory against Argentina. World No.9 de Minaur put on a devastating display in his first hit-out of the season at Ken Rosewall Arena, posting a 6-1 6-4 result over Tomas Etcheverry in 75 minutes.

Nadia Podoroska's veteran mettle gave Argentina the early lead over Australia at the United Cup in Sydney and Maria Lourdes Carle joined forces with Tomas Martin Etcheverry to seal the win in mixed doubles.

Elena Rybakina marks her United Cup debut by helping Kazakhstan to a 2-1 victory over Spain at the season-opening tournament in Australia.

Eight teams take the court on Day 2 of the United Cup, with Australia headlining the action in Sydney, while Greece and Spain prepare for a showdown in Perth.

Australia's United Cup campaign will begin in Sydney against Argentina, with world No.9 Alex de Minaur primed to star again at Ken Rosewall Arena.