Greater Western Sydney forwards Cora Staunton and Rebecca Privitelli have powered the Giants to a 20-point victory over St Kilda in torrential rain at Moorabbin.

The Giants adapted to the wet conditions better, booting four goals to none in a match-winning first quarter to run out 7.3 (45) to 3.7 (25) winners on Saturday.

Veteran Staunton, who turns 40 this year, and Privitelli were the game changers with three goals each.

SAINTS MATCH CENTRE: View all news, stats and videos from Round 7

The Saints worked their way back into the game during the second quarter, but were scoreless after half-time until the dying seconds when Caitlin Greiser slotted a major on the siren.

They trailed by less than a goal late in the third quarter before GWS extended the lead back out to 20 points at the final break.

Only one point was kicked to the southern end of the ground for three quarters until Staunton broke Saints hearts with the first and only major of the final term.

The result was GWS' third win of the season, while the Saints slump to a 2-5 record.

Georgia Patrikios was St Kilda's best with 27 possessions and 10 tackles, while Alice Burke, daughter of Saints legend Nathan, showed some promising signs in her second appearance at the top level.

ST KILDA  0.1  2.7  2.7  3.7 (25)
GREATER WESTERN SYDNEY  4.0  4.0  6.3  7.3 (45)

St Kilda: Shierlaw, Guttridge, Greiser
Greater Western Sydney: Privitelli 3, Staunton 3, Smith

St Kilda: Patrikios, Phillips, Burke, Shierlaw, Smith
Greater Western Sydney: Parker, Privitelli, Beeson, Dal Pos, Staunton

St Kilda: Dillon (TBC)
Greater Western Sydney: Nil

Reports: Nil