The Western Force have asked 35-year-old Rugby World Cup-winner Richard Kahui to turn back the clock and play on the wing against dangerous Queensland Reds recruit Suliasi Vunivalu on Saturday.
And the Melbourne Rebels have been forced to replace suspended lock Ross Haylett-Petty for their clash with the NSW Waratahs on Friday.
SUPER RUGBY AU, ROUND FIVE
REBELS vs WARATAHS, Friday 7.45pm AEDT at AAMI Park
Rebels coach Dave Wessels has made just one enforced change to his starting line-up, with lock Steve Cummins promoted from the bench to replace Ross Haylett-Petty.
Haylett-Petty has been suspended for three weeks for his dangerous tackle on Force loose forward Tomas Lezana.
Haylett-Petty was sent off for the hit but the Rebels were still able to grind out a 10-7 victory – their first of the season.
Friday will also mark the Rebels' first home game of the season.
"It's a massive game this week and it's really awesome to be back," Rebels flanker Richard Hardwick said.
"Just the thought of driving in again and returning back home to AAMI Park is really exciting because the energy our fans give us is immense.
"All of the boys are super excited to be back out playing in front of our crowd again – we can't wait to see everyone's familiar faces."
Meanwhile, Waratahs coach Rob Penney has named an unchanged starting line-up in terms of personnel from the one that lost to the Force a fortnight ago.
There is, however, a positional switch with props Harry Johnson-Holmes and Te Tera Faulkner trading places in the engine room.
REBELS (15-1): Tom Pincus, Lachie Anderson, Stacey Ili, Reece Hodge, Marika Koroibete, Matt To'omua (c), Joe Powell, Michael Wells, Richard Hardwick, Josh Kemeny, Trevor Hosea, Steve Cummins, Pone Fa'amausili, James Hanson, Cabous Eloff
Reserves: Jordan Uelese, Matt Gibbon, Lucio Sordoni, Tom Nowlan, Rob Leota, James Tuttle, Glen Vaihu, Frank Lomani
WARATAHS (15-1): Mark Nawaqanitawase, Jack Maddocks, Alex Newsome (c), Tepai Moeroa, James Ramm, Will Harrison, Jack Grant, Jack Dempsey, Carlo Tizzano, Lachie Swinton, Sam Caird, Hugh Sinclair, Te Tera Faulkner, Dave Porecki, Harry Johnson-Holmes
Reserves: Tom Horton, George Francis, Darcy Breen, Sam Wykes, Jeremy Williams, Henry Robertson, Tane Edmed, Lalakai Foketi
REDS vs FORCE, Saturday 7.45pm AEDT at Suncorp Stadium
Reds coach Brad Thorn has made just one change to his starting line-up with Ilaisa Droasese replacing fellow Fijian Filipo Daugunu on the left wing to play the Force.
Daugunu is unavailable for personal reasons.
"The Force are a quality team who we respect," Thorn said.
"They have plenty of experience and will make the trip across from Perth looking for a result.
"We're expecting a tough match against a good opposition."
Meanwhile, Force coach Tim Sampson has surprisingly shifted former All Black Richard Kahui to the left wing, with Henry Taefu taking his place at inside centre.
Kahui, 35, started on the wing in the 2011 Rugby World Cup final but has been used as a powerful midfield presence so far this season.
This week he will be tasked with shutting down Reds dangerman Suliasi Vunivalu, who scored a try on his starting debut last round.
Up front, former Wallabies lock Sitaleki Timani starts ahead of Ryan McCauley while former Reds prop Greg Holmes will play his 150th Super Rugby game.
"It's a huge honour," Holmes said.
"Not many players make it to 150, so it's pretty special.
"We're confident and we're putting in a lot of hard work.
"We're going there to win this game."
REDS (15-1): Jock Campbell, Suliasi Vunivalu, Jordan Petaia, Hunter Paisami, Ilaisa Droasese, James O'Connor (c), Tate McDermott, Harry Wilson, Fraser McReight, Angus Scott-Young, Lukhan Salakaia-Loto, Angus Blyth, Taniela Tupou, Alex Mafi, Dane Zander
Reserves: Brandon Paenga-Amosa, Harry Hoopert, Zane Nonggorr, Ryan Smith, Seru Uru, Kalani Thomas, Hamish Stewart, Bryce Hegarty
FORCE (15-1): Rob Kearney, Byron Ralston, Tevita Kuridrani, Henry Taefu, Richard Kahui, Jake McIntyre, Tomas Cubelli, Brynard Stander (c), Kane Koteka, Fergus Lee-Warner, Sitaleki Timani, Jeremy Thrush, Greg Holmes, Feleti Kaitu'u, Tom Robertson
Reserves: Jack Winchester, Angus Wagner, Santiago Medrano, Ryan McCauley, Tim Anstee, Ian Prior, Jack McGregor, Marcel Brache
SUPER RUGBY AOTEAROA, ROUND FOUR
HURRICANES vs CHIEFS, Saturday 5.05pm AEDT at Sky Stadium
BLUES vs CRUSADERS, Sunday 1.35pm AEDT at Eden Park