The Gallopers have defeated the Magpies 52-33, producing one of their most dominant attacking performances of the season.
Souths were leading early in the second half but ill discipline combined with GPS powerful set piece sealed their fate.
Due to the Reds bye, Chris Feauai-Sautia returned for the Magpies whereas GPS welcomed back Chris Kuridrani and Nick Frisby.
Souths drew first blood in the fixture through flanker Enari Levoni, but GPS managed to bounce back through a defensive scrum inside Souths’ 22m line leading to a pick and drive try.
Despite a yellow card to GPS number 8 Jay Havelu, GPS flyer Eric Vasukicakau showed his ball carrying ability by crashing over the line in close quarters play.
Souths hit back instantly, with a conversion to Scott Malolua giving the Magpies a two-point lead.
With phases building early in the second half, Fred Burke stretched over the chalk to score a try in his 50th game for the Gallopers.
The back and forth play continued with Enari Levoni scoring his second try of the game, before Havelu crashed over again to level the score at 26-all.
With only twenty minutes left to play, a send off to Souths substitute Teti Tela, proved to be a tipping point in the fixture.
Only two minutes later, Souths feed at the scrum was spoiled by the Galloper’s pack who shoved them back to their own line with Havelu dotting it down to take the lead.
Vasukicakau was next to strike with a flat ball from Frisby finding him unmarked in the corner for his second try of the match.
Debutant Conor Cowhig proved his worth as a breakdown technician, securing a turnover for Frisby who scored a brilliant chip and chase try.
The final nail in the coffin came through a damaging run by Daniel Byrne who found substitute Trent Allen to score a runaway try.
A late try for Souths was no consolation in a disappointing second half with the Galloper’s securing a convincing 52-33 win.
Next week GPS take on Bond University at Yoku Road whereas Souths face another tough encounter against the University of Queensland.
GPS 52 (J Havelu 3 tries, E Vasukicakau 2, N Frisby, T Anderson tries AJ Alatimu 6 cons) d Souths 33 (L Enari 2, J Ngamanu, C Feauai-Sautia, N Fatu tries. S Malolua 4 cons)
Scores For the Day
Premier Grade GPS 52 Souths 33
Premier Reserve GPS 50 Souths 34
Premier Colts GPS 50 Souths 0
1st Grade GPS 24 Souths 36
2nd Grade GPS 7 Souths 12
3rd Grade GPS 17 Souths 32
4th Grade GPS 45 Souths 0
Colts 1 GPS 54 Souths 10
Colts 2 GPS 17 Brothers 17