After big wins over Australia and Japan respectively in the Rugby World Cup, England and South Africa moved up in the world rankings.
Ireland have struggled to hit the same heights in 2019 after their success last year, admitted outgoing head coach Joe Schmidt.
There were tears from Rory Best after New Zealand sent him into retirement on the back of a heavy Rugby World Cup quarter-final defeat.
South Africa are strong favourites to inflict revenge on Japan four years after the Springboks were humiliated in Brighton.
Warren Gatland has no concerns over Dan Biggar after the fly-half was passed fit despite missing Wales' last match due to concussion.
New Zealand will benefit from the fearless nature of Sevu Reece and George Bridge against Ireland, All Blacks assistant Ian Foster believes.
Ryohei Yamanaka will start for Japan against South Africa, with Jamie Joseph forced to make a single change for the quarter-final tie.
Jason Robinson, who lifted the Webb Ellis Cup in 2003, says England will consider anything less than winning the Rugby World Cup a failure.
Former Australia captain James Horwill says the Wallabies can lift the Webb Ellis Cup for a third time in Japan.
The row between Scottish Rugby and World Rugby rumbles on with the former querying misconduct charges brought by the latter.
Former Australia captain James Horwill says the fact that England have not yet been tested in Japan could be a plus for the Wallabies.
New Zealand are looking forward to the challenge of facing Ireland in Tokyo rather than looking back on why they lost in Dublin last...
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The Scottish Rugby Union faces a hearing after comments made about the potential impact of Typhoon Hagibis at the Rugby World Cup.
England have won six consecutive matches against Australia but Michael Cheika has faith his side can end that run this weekend.
Japan raised the spirits of the host nation on a weekend that will be remembered for such contrasting reasons.
Wales will face France in the last eight next weekend after scoring four second-half tries to seal top spot in Pool D.