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.

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 kicked off his United Cup campaign by defeating Tomas Etcheverry, but it wasn't enough to guide Australia to a win over Argentina.

Alex de Minaur has levelled Australia's tie with Argentina at the United Cup in Sydney with a commanding 6-1 6-4 triumph over Tomas Etcheverry.