For a full recap of the Day 1 games as well as the draws, ladders and top performers, click here.
The games followed Media Day for the athletes and preceded this morning which will see the Ivor Burge Championships also get underway.
For the Under-20 women, home team ACT got off to the perfect start with a four-point win over Queensland. They survived a 20-32 final term onslaught from Queensland, having set up the victory with a 44-30 first half.
Sharna Thompson was devastating, scoring 28 points in 25 minutes off the bench while Zoe Ramshaw (15 points on 7-9 shooting) and Isabelle Bourne (13 points, 15 rebounds) proved too strong for Adelaide Fuller (22 points) and Grace Champion (16 points).
A nasty ankle injury for Alex Fowler may have also spelled the end of the WNBL player's tournament very early in a further blow to Queensland.
Meanwhile, Western Australia got on the winners list as Suzi-Rose Deegan (21 points, 11 boards) had six points in the fourth quarter and Tayah Burrows and Samantha Ashby combined for ten points to help overcome Victoria A 69-68.
For the Under-20 men, both Victorian sides got off to hot starts with Victoria A beating Queensland 88-79 despite Callum Dalton's 36 points, ten rebounds and four blocks.
New South Wales had six players reach double-figures in a big victory over Northern Territory while Western Australia ran away with a 20-point win over ACT with a 21-8 fourth quarter courtesy of Luke Travers (22 points) and Kyle Bowen (19 points, 11 rebounds, five assists).
Day 2 begins at 8am today with New South Wales and ACT getting the Ivor Burge women underway while the Ivor Burge men's competition starts at 10am with ACT hosting Tasmania.
Live stats for the tournament can be found here.