The Wallaroos held a 33-26 lead over South Africa after 79 minutes in Cape Town.
Joe Yap’s side started the tournament with a bonus point win over Wales.
Watch the Wallaroos take on South Africa live and exclusively on Stan Sport.
Cecilia Smith will start, with flanker Ash Marsters equaling the Wallaroo’s record for most caps.
As for South Africa, they are riding a wave of support at home after a narrow win over Japan.
The winner will take full lead on the ladder, with Scotland currently in first place after defeating Japan.
Follow all the action from 1am on our live blog below or on our Match Center.
80+3 minutes: South Africa march all the way down the field, but Ash Marsters makes the winning steal.
79 min: South Africa try: Hooker Mikke Gunter dives over the line after a powerful rolling maul from the 22 Wallaroos 33-
77 minutes: South Africa continue to fight, marching inside the top 22 after penalty for no rolling.
75 minutes: Samantha Wood comes on for Rayne Morgan.
74 minutes: Teana Molloy replaces Tania Naden who was receiving treatment during the try.
73 min: South Africa try: Center Zintle Mpufa crashes over the line, giving the hosts late hope Wallaroos 33-19
72 minutes: Lucy Dinnen for Michaela Leonard
70 minutes: Australia rally to get Norsindiso Booy over the line and drop out on the goal line.
64 min: South Africa look for a try to stay alive, but the Wallaroos come up with a steal.
61 minutes: Trilene Pomare and Lori Kramer replace Georgina Friedrichs and Desiree Miller.
60 minutes: Wallaroos look for another try but give up the ball.
57 minutes: Lydia Cavoa and Alana Sikimeti with Bridie O’Gorman and Eva Carpani.
56 min: Try for the Wallaroos: Maya Stewart scores a try with a great ball to make her 6th consecutive goal.
from Caitlin Hulse puts winger into space and chases for try Wallaroos 33-12
52 minutes: Miller breaks the line again but is trapped and turned over.
50 min: Wallaroos try: Desiree Miller beats the winger again for a great try, this time undeniable Wallaroos 26-12
47 minutes: Wallaroos deny an easy three-pointer and drop the ball off the tap
45 minutes: Desiree Miller pops out and turns the field over, and her grubber to Maya Stewart on penalty advantage is narrowly dead.
42 minutes: Wallaroos survive as lineout from penalty is not straight with 8 minutes left as rain begins to fall
42 minutes: Atasi Rafai is given a yellow card for a high tackle on Chumisa Kawe, the play remains on a yellow card.
HT’: Atasi Rafai replaces Tavua Tuinakaubadla during break
Halftime: Wallaroos 21 – 12 South Africa
40 minutes: Wallaroos no try: Desiree Miller takes advantage of a mismatch and sprints through the defense, drawing the full-back to replace Layne Morgan, who is brought down in front of the line, and Miller’s second shot is denied for a knock-on. and played the start and finish. by Morgan during the build-up.
36 min: Both teams throw the ball at each other for the decisive try before the break.
30 minutes: South Africa try: Sinazo Makachulwa dives from close to bring the hosts back Wallaroo 21-12
26: Australia hold the ball on the line after a Desiree Miller break, Eva Karpani turns to put the ball down.
24 min: South Africa continue their good form, breaking through the field through Asesa Hele, but give away a crucial penalty five meters from the ball.
21 min: Wallaroo no try: Another break from Stewart and some great hands between the backs start a counterattack, but Cecilia Smith drops the ball over the line with no one around.
18 minutes: The Wallaroos stand up and compete for lineouts in their own line, temporarily stopping South Africa’s powerful attack.
13 min: Wallaroos try: Eva Karpani breaks through a lazy defense and dives under the posts to show off her footwork Wallaroos 21-5
12 min: Wallaroos win lineout inside South Africa 22 and look to react.
9 minutes: South Africa try: The hosts electrify the crowd as Caitlin Hulse’s clear kick is charged down and scrum-half Unam Tose converts it to beat the Wallaroos 14-5.
8 minutes: Wallaroos try: Incredible break from Maya Stewart where good mate Georgina Friedrichs beats the defender, flicks the full-back and fires into the center for a try Wallaroos 14-0
6 min: Pesi Pal brings Australia back into attack after a sharp offload from Ash Marsters, but his offload back inside is only intercepted.
4 minutes: Wallaroos try: Siokapesi Pal barges over from short to put Australia Wallaroos ahead 7-0
1 minute: Faitala Moleka’s excellent clearance relieves South Africa’s early pressure and lifts Australia 35 meters out.
Kickoff: We are leaving Cape Town to loud crowds showing their support for South Africa. The national anthem was sung, the countdown was complete, and the game began.
wallaroo 33
Tries: Pal, Friedrichs, Kalpani, Miller, Stewart.
Cons: Moreca 4/5
south africa 26
Try: Tose, Makachulwa, Mpufa, Gunther
Cons: Loose 3/4
Wallaroos vs South African National Team
Wallaroo (15-1): Katilin Hulse, Maya Stewart, Georgina Friedrichs, Cecilia Smith, Desiree Miller, Faitala Moleka, Layne Morgan, Tavua Tuinacauvadla, Ashley Marsters, Siokapesi Pal, Michaela Leonard (c), Caitlan Reaney, Eva Kalpani, Tanianaden, Bridle O’Gorman
Substitutes: Tianna Molloy, Lydia Cavois, Alana Shikimeti, Atasi Rafay, Lucy Dinnen, Samantha Wood, Trilene Pomare, Lori Kramer
South Africa (15-1): Eloise Webb, Jackie Cilliers, Zintle Mpufa, Chumisa Kawe, Ayanda Malinga, Nadine Ruth, Unam Tose, Aseza Hele, Sinazo Makachulwa, Lusando Dumke (c), Vaina Ubisi, Danelle Lochner, Babalwa Rasha, Roseline Botes, Sanelisiwe Charlie.
Substitutes: Mikke Günter, Yonela Ntsingoro, Adisa Mukiba, Norsindiso Booi, Katha Jacobs, Sizofira Sorontsi, Felicia Jacobs, Beihandre Dorf.
Referee: Precious Pasani (Zimbabwe)
Assistant referees: Amelia Luciano (USA) & Maria Latos (Germany)
TMO: Estelle Waiapu (New Zealand)
How to watch Wallaroos vs South Africa
The match between the Wallaroos and South Africa will be broadcast live on Stan Sports.
Coverage will be broadcast live, ad-free, on Stan Sport and will begin at 12:50am AEST, with kick-off scheduled for 1am.