Johnny Sexton and Rory Best led the way as Ireland's thumping win over Scotland affirmed their credentials as Rugby World Cup challengers.
Italy won a Rugby World Cup opener for the first time since 1991 after triumphing in their Group B clash in Osaka.
Johnny Sexton was taken off with injury against Scotland earlier this year and Gregor Townsend's men intend to get physical again.
Alun Wyn Jones has been lauded by Wales coach Warren Gatland as he prepares to rack up a landmark appearance against Georgia.
New Zealand started their Rugby World Cup campaign impressively but Steve Hansen said: "There's plenty of stuff we can work on."
A penalty count heavily in their favour was key to securing New Zealand victory over South Africa, according to Rassie Erasmus.
Six minutes of first-half brilliance against South Africa underlined why New Zealand are Rugby World Cup favourites once again.
Kieran Read was delighted New Zealand took the opportunities presented to them by errors from South Africa in the Rugby World Cup opener.
South Africa started vibrantly but were put to the sword by New Zealand in an incredible first-half spell that changed the game.
Guilhem Guirado was proud of France's first-half display against Argentina, but acknowledged their second 40 was not good enough.
Camille Lopez's first act after coming on was to score a match-winning drop-goal to spare France's blushes against Argentina.
Fiji failed to see out a shock victory over Australia in their Rugby World Cup opener, and Michael Cheika was proud of his team's...
Read more
Australia produced a strong second half to overcome Fiji in Pool D at the Rugby World Cup.
Wales named an experienced team to face Georgia and captain Alun Wyn Jones will equal a record.
Rugby World Cup winner Lawrence Dallaglio is confident England, under Eddie Jones' guidance, can challenge favourites New Zealand in Japan.
England have prepared a specific plan to counter the strengths of Tonga in their World Cup opener, according to Eddie Jones.