MetroStars secured the final berth in the Westfield FFA Cup's Round of 32 with a 1-0 win over Adelaide Comets on Saturday.
Liam Wooding's strike just after half-time was enough for MetroStars to qualify for the first national round of the FFA Cup for the second straight year, as they simultaneously lifted the Federation Cup as South Australia's cup champions.
Former Adelaide United and Perth Glory forward Travis Dodd flicked on a long throw for MetroStars in the 52nd minute, and Wooding toe-poked the ball beyond the Comets goalkeeper.
With MetroStars having qualified for the 2016 FFA Cup proper, the Round of 32 draw will be held on June 30.
Last year, MetroStars won their Round of 32 match 2-1 away to Blacktown City before being eliminated 1-0 by Oakleigh Cannons in the last 16.
Saturday's win at Coopers Stadium saw MetroStars lift South Australia's Federation Cup for the fourth time, while the Comets' first cup final ended in disappointment.