South Australia will go into the final day at the top of the table with 34 points.
SA hold a seven point lead over second placed Tasmania.
Queensland is at the bottom of the table with 15 points and has no chance of regaining the trophy it won two years ago.
Helping to restore pride for the host state will be Emily Lang who looks to have a great chance of winning both NARS divisions of the Class 1 Plates.
Lang, who leads the Brisbane jockeys’ premiership by five wins, will ride the Tony Gollan-trained Livalittle in the colts and geldings event and Glowlight for Matthew Dunn in the fillies and mare’s race.
Lang's team mates include Cody Collis, Bailey Wheeler and Olivia Kendal while Felicity Atkinson will represent leaders South Australia.