Eighteen-year-old Edward Osei-Nketia won the men's race in 10.34sec in only his second appearance in Kiwi colours.

The emerging prospect is the son of New Zealand's 100m record holder Gus Nketia but was raised in Australian capital Canberra.

He chose New Zealand over Australia last month and has been tipped to break his father's record of 10.11 and become the first from the country to go under 10 seconds.

Jack Doran was second for hosts Australia at Townsville Sports Reserve as he stopped the watches at 10.39, with his compatriot Jack Hale winning bronze in 10.51.

Zoe Hobbs claimed the women's 100m title for New Zealand as she clocked 11.56.

Naa Anang won Australian silver in 11.67 as Georgia Hulls won bronze for New Zealand in 11.99.

"It feels like we both did good for the country," Osei-Nketia said to Stuff.

Hobbs added: "It's amazing, we've got such good support here and it [sprint double] probably hasn't happened in a long time.

"It's awesome to see Ed get the result too."

In the 1,500m Australia won both titles and five out of the six available medals.

Matthew Ramsden won the men's race in 3min 44.41sec in front of team-mate Rorey Hunter who clocked 3:44.67.

Samuel Tanner won bronze for New Zealand in 3:46.30.

The women's race saw a 1-2-3 as Georgia Griffith came home in 4:12.53 for gold.

Bernadette Williams and Sarah Billings won the minor medals in 4:13.52 and 4:16.41 respectively.

In the field, New Zealand's Hamish Kerr pulled off a shock as he won the men's high jump in front of Australia's Diamond League and Commonwealth Games champion Brandon Starc.

Kerr cleared a best of 2.33m as Starc got stuck on 2.22m, failing three times at 2.26m.

Kelsey-Lee Barber took home the women's javelin title for the Australians, registering a distance of 65.61m.

Her fellow countrywoman Mackenzie Little won silver with 57.74m as New Zealand's Tori Peeters recorded 51.79m for the bronze.

In the men's long jump, Australia's Henry Smith leaped out to 7.91m for gold with New Zealand's Jordan Peters on 7.61m in silver.

Bronze went to Christopher Mitrevski of Australia with 7.50m.

In the decathlon there was an Australian clean sweep as Ashley Moloney took gold with 8,103 points.

Cedric Dubler scored 8,031 in silver medal position and Kyle Cranston ended on 7,702 for bronze.

The event will continue until Friday (June 28).

It has attracted a strong field this year after regional events were given increased importance in the World Championship qualification process.

Regional powerhouses Australia and New Zealand traditionally send development squads.