The 38-year-old, who had never gone beyond the semi-finals in four previous appearances, overcame her compatriot 11-7, 13-11, 12-14, 13-15, 11-9, 11-7 to become the fifth winner of the event and secure a place in the Women’s World Cup.

Dederko had finished second in her group having been beaten by team-mate Jian Fang Lay, the top seed and defending champion, 11-9, 11-6, 11-7, 11-13, 14-12.

She went on to defeat New Zealand’s Armindeep Singh 12-10, 11-1, 11-1, 11-5 before beating another Kiwi, Chunli Li, 6-11, 11-5, 11-8, 11-9, 11-7 in the last four.

Tapper, the first Australian to qualify to compete at both the Olympic and Paralympic Games, claimed a 13-11, 11-9, 6-11, 9-11, 11-9, 4-11, 11-7 semi-final win over Lay, who recovered to overcome Li 4-11, 11-2, 14-12, 11-9, 7-11, 11-6 and take third spot.

Lay’s defeat against Tapper was her first in the tournament since losing to Li in the 2012 final.

In an all-Australian men’s singles final, top seed and favourite David Powell registered an 11-6, 11-4, 11-9, 9-11, 12-10 victory over Kane Townsend.

Powell, who clinched a Rio 2016 berth by triumphing at the ITTF Oceania Championships in Bendigo in March, was a direct entrant to the semi-finals having finished first in his group.

The two-time runner-up beat Vanuatu’s Yoshua Shing 11-8, 11-4, 11-5, 11-5 in the semi-finals, while number two seed Townsend secured a 12-10, 11-7, 11-8, 11-9 win over older brother Wade.

The elder Townsend ensured a third-place finish by defeating Shing 12-10, 11-9, 14-12, 16-14.

Victory at the fifth attempt for Powell means he will make his Men’s World Cup debut in the German city of Saarbrücken in October.

Last year, he had to settle for the runners-up spot as William Henzell claimed his fifth title.

Shing beat New Caledonia’s Laurent Sens 12-10, 11-6, 11-6, 11-7 in the final of men’s Pacific Cup, an event for which Australia and New Zealand are not eligible.

Fiji’s Grace Rosi Yee overcame older sister Sally Yee 11-6, 11-9, 11-7, 11-8 to secure the equivalent women's crown.