Dave Kearney's hat-trick helped Leinster begin the defence of their Pro14 title with a win over Benetton Treviso.
South Africa scored nine tries but could have done better against Namibia, said boss Rassie Erasmus.
Samoa are without two men due to suspension against Scotland but Steve Jackson believes the setbacks are motivating factors.
Their win over South Africa in 2015 may never be topped, but Japan have once again exceeded expectations with a massive World Cup upset.
Mario Ledesma saw his side make a fast start in the win over Tonga but he knows Argentina will need to up their game...
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Ireland were beaten by Japan without Jack Conan and will now be without the back row for the remainder of the Rugby World Cup.
Japan were knocked out of the 2015 Rugby World Cup having lost to Scotland, and Jamie Joseph fears a repeat despite beating Ireland.
South Africa were expected to beat Namibia without any problems, and that was how it played out as Rassie Erasmus' side grabbed nine tries.
Japan's victory over Ireland at the Rugby World Cup should not be considered a huge upset, according to Rory Best.
Australia will be without Reece Hodge for three matches after he opted against an appeal of his ban, but he still had a response.
Ireland were sensationally upset by hosts Japan at the Rugby World Cup on Saturday, leaving Brian O'Driscoll stunned by their performance.
Ireland's Rugby World Cup hopes took a huge hit as hosts Japan produced another finals shock in Shizuoka.
Ireland's Rugby World Cup hopes took a huge hit as hosts Japan produced another finals shock in Shizuoka.
Argentina made a fast start on their way to a Rugby World Cup victory over Tonga.
Ruan Pienaar inspired the Cheetahs to victory over the Glasgow Warriors on Friday, while Ulster were too good for the Ospreys.
Uruguay are chasing another "shock" at the Rugby World Cup, according to coach Esteban Meneses, as they prepare for Georgia.