The U16 and U19 National Championships are underway as teams look to book their place in the final on November 13.
Round four kicks off with the Melbourne Rebels hosting the ACT Brumbies as both teams look to bounce back from disappointing defeats to the NSW Waratahs and Queensland Reds.
This will be followed by the Reds travelling to Perth to face a Western Force side hungry to push their finals credentials.
Check out all the team news for round four below
U16s - 12:00 pm AEDT
REBELS (1-15): Carter Tagaloasa, Ramsey Sefo, Dante Siale, Louis Treacy, Caleb Fanolua, Sam Fangatua, Mapu Fiso, Teina Graham, Jakim Ngatoko, Cyrus Perenise, Andrew Mulipola, Jackson Jury, Inoke Pauta, Thomas Louw, Joseph Vela
RESERVES: Reece Paramore, Bobby Deo, Elbjorn Fiaui, Ukarau Zahvid Tariu-Simonis, Xander Iosefo, Tainui Whakaari, Finn McKay, Rayan Latu
BRUMBIES (1-15): Tipa Vaili, Mackai Reedy, Maloi John Terupo, Jonah Allen, Talia'uli Latukefu, Alex Hardy, Bailey Bouquianx, Harry Harrington, Grady Woolley, Sam Chapman, Nixion Lemisio, Emmett Smith, Harry Hudson, Denzel Veikune, Joseph Lonergan
RESERVES: William Cash, Leevi Pomale, Bradley Patmore, Bronson Brown, Joshua Chalker, Jasvia Singh-Clark, Xavier Aitolu, Scott Dolvin
U19s - 1:30 pm AEDT
REBELS (1-15) (17) Sione Fotuaika, Martin Vaega, Patrick Lavemai, Max Johnson, Joeli Niubalavu, Eyda Haisila, Antonio Masina, Leafi Talataina, Pati Seu, Mason Gordon, Toby Fraser, Lebron Naea, David Vaihu, Sebastion Sialau, Divad Palu
RESERVES: Jeremiah Sialau, (1) Iverson Tolai-Toto, AJ Preketes, Isaac Rawaqa, Darcy Keating, Will Roostan, Frank Ralogaivau, Jozef Ah Kuoi
BRUMBIES (1-15): Jack Morrison, Liam Bowron, Sam Eden, Sam Bertram, (19) Xavier Degei, Waisea Tudulu, Christopher Mickelson, Baden Godfrey, Ben Keogh, Cullen Gray, Henry Palmer, Ben Kafer, Sonny Meleisea, Matias Jensen, Austin Anderson
RESERVES: Reeve Smith, Mark Tiuru-Beni, Dylan Challita, (5) Harry Williams, Tevita Alatini, Shane Wilcox, Jacob Mead, (24) Syris Schmidt
U16s - 10:30 am AWST/ 1:30 pm AEDT
FORCE (1-15): Lee Ruiz, Ellis New, Salesi Tatafu, Jackson Bridges, Manaia Te Tana, William Crew, Luke Holt-Brown, Hugh Chapman, Tamarangi Tunui, Brodie Mainwaring, Ken Ah Hong, Christoffel Jansen, Allus Tutai, Devan Button, Josh Whittingham
RESERVES: Zavier Hawira, Charlie Groom, Zane Wesley, Rohan Viskovich, Ngadang Kunai, Samuel Almond, Taatama Rere, Thomas Yates
REDS (1-15): Harry Solofa, Ewald Kruger, Lochlan Smith, Will Pascoe, Avery Thomson, Tom Robinson, Joseph Stoddart, John Grenfell, Samuel Watson, Charlie O'Connell, James Duggan, Ryan Heaton, Preston Laine-Sietu, Tom Howard, TBC
RESERVES: Nate Hepi, Blaze Moana, Princeton Ioane, Jasper Barry Billy Wellard, Tom Goldie, Zac Nichoi, Trace Beattie
U19s - 12:00 pm AWST/3:00 pm AEDT
FORCE (1-15): Jonathan Chapman-Stean, Marley Pearce, Anthony Moataane, Ruben Steenkamp, Caleb Karangaroa, Dane Sawers, James Pese, Ned Slack-Smith, Thomas Crofts, Nathan Tahu, Justin Talemaira, Edward Turagava, Justin Landman, Kauri Tipene-Grace, Brad Avery
RESERVES: Joshua Mongard, Joseph O'Brien, Rueben Baker, Ihaia-Lee Kamizona-Heke, Aidan Mcdonagh, Hunta Boyes, Ammaru Iti, Blake Mettam
REDS (1-15): Harrison Usher, Max Craig, Nick Bloomfield, Lachlan Shaw, Tanna Wilson, Stuart Tualima, Nick Baker, John Bryant, Willem Johnstone, Harry McLaughlin-Phillips, Jarrod Homan, Taj Annan, Tim Ryan, Robert Mapa, Harry Grant
RESERVES: Noah Hartley, Jack Booker, Saxon Warwick, Leandro Tupi, Will Robinson, Stuart Tualima, Sam Farra, Alex Miles, Matthew Brice, Angus Ward