For the first time in their history Ireland beat New Zealand on home soil, toppling the world champions with a fine performance in Dublin.
After Saturday's win over Italy, Michael Cheika cannot wait for Australia's clash with England at Twickenham next weekend.
Handre Pollard scored 18 points as South Africa became only the second side in 12 matches to beat Scotland at Murrayfield.
Eddie Jones had urged England to "smash" Japan and he thinks those comments were ringing in the Brave Blossoms' ears at Twickenham.
Teenage lock Joel Kpoku came off the bench to give Saracens a seventh Premiership wins out of seven, which put them back at the summit.
Italy were hard done by in Padova on Saturday when Tito Tebaldi's first-half try was ruled out, according to Conor O'Shea.
Japan led 15-10 at half-time, but England scored three tries after the interval to avoid a huge upset at Twickenham.
Tonga showed some fight but Wales ultimately stormed to a 74-24 victory at the Principality Stadium.
Australia warmed up for their trip to Twickenham with a 26-7 victory over Italy, with Marika Koroibete scoring twice for the Wallabies.
Gloucester had Danny Cipriani back from a ban and the fly-half was instrumental in their bonus-point 36-13 win over Leicester Tigers.