Melbourne VIC, Australia, 7 December 2015 | tennis.com.au

Destanee Aiava has stormed to victory in her first round-robin group match of the 18/u Australian Championships at Melbourne Park on Monday.

The 15-year-old’s victory was one of many comfortable wins for the seeds on the opening day of 18/u play as part of the December Showdown.

> view the 18/u Australian Championships draws

Aiava, the No.6 seed, streaked to a 6-1 6-0 victory in 55 minutes over Alexandra Bozovic, joining No.1 seed Priscilla Hon, third seed Sara Tomic and defending champion Olivia Tjandramulia as straight-sets winners on Monday.

In the boys’ draw, top seed Oliver Anderson posted an identical scoreline to Aiava, trouncing Richard Yang.

Second seed Marc Polmans was also dominant in a 6-2 6-1 win over Lucas Vuradin.

> view the 18/u Australian Championships scores and results

Daniel Hobart and Jake Delaney – the third and fourth seeds respectively – were stretched to three sets in their opening round-robin matches, but were nonetheless among seven seeded winners first up in the boys’ draw.

The only seed to lose on Monday was No.8 seed Stefan Vujic, who fell 6-3 7-6(0) to Adam Walton.

Quarterfinals set in 14/u Australian Championships

Five of the top eight seeds have progressed to the last eight of the boys’ 14/u Australian Championships, setting up some intriguing battles in the last eight.

No.3 seed Ken Cavrak takes on fifth seed Qian Sun, with the winner projected to face the in-form Rinky Hijikata in the semifinals; Hijikata, seeded eighth, has dropped only three games in three matches and next takes on the unseeded Stefan Storch.

In the top half of the draw, No.1 seed Tristan Schoolkate faces 12th seed Tom Evans and fourth seed Nikita Volonski lines up against Sebastian Flock, the No.10 seed.

> view the boys’ 14/u Australian Championships draw

The girls’ 14/u draw is a tale of two halves – the top half, headed by No.1 seed Amber Marshall, is wide open while the bottom half is stacked with seeds.

Marshall faces the unseeded Tayla Whitehouse in the quarters while the only other seed in her half – seventh seed Patricia Apisah – lines up against Natasha Russell.

In the bottom half, it’s third seed Olivia Gadecki against eighth seed Annerly Poulos while No.2 seed Madison Bishop takes on fifth seed Tara Gilich.

> view the girls’ 14/u Australian Championships draw

The December Showdown runs from 5-20 December 2015 at Melbourne Park.