Wales hope to have Tomas Francis and George North fit to face Tonga, but Samson Lee has left the camp with a hamstring injury.
Warren Whiteley's calf injury could keep him out of South Africa's clash with Scotland, but Eben Etzebeth may return.
Gary Graham was called up to the England Six Nations squad this year, but is set to win his first international cap for Scotland.
Sean O'Brien suffered another injury blow on Saturday, but Ireland coach Joe Schmidt says he has the resilience to make a quick return.
Stuart Hogg said the time has come to challenge himself in a different environment after nine seasons with Glasgow Warriors.
Wallabies and Waratahs back-rower Jack Dempsey re-signed until at least 2020.
Kieran Marmion should be fit to feature in Ireland's upcoming match against New Zealand, but Sean O'Brien will play no part.
Kieran Marmion, Bundee Aki and Luke McGrath crossed to give Ireland a largely unconvincing win over Argentina.
Having played the last time Wales beat Australia 10 years ago, Alun Wyn Jones was left feeling old after Saturday's win over the Wallabies.
For the first time since November 2008, Wales were able to celebrate victory over Australia after a tense affair in Cardiff.
New Zealand edged England in an enthralling Test on Saturday, but Owen Farrell is more concerned about beating them at the World Cup.
Sam Underhill thought he had crossed for a winning England score against New Zealand, but Courtney Lawes was deemed offside.
Georgia's hopes of earning themselves a place in the Six Nations may have taken a knock after they lost to Italy.
Having been behind as half-time approached, Scotland ultimately thrashed Fiji with Tommy Seymour scoring three of their eight tries.
The return of Stuart Hogg slightly eases Scotland's concerns, while Greig Laidlaw and Finn Russell also start against Fiji.
South Africa are able to call up European-based players against France, leading to the returns of three experienced stars.