The Hurricanes withstood huge late pressure to beat the Highlanders, while the Stormers were beaten by the Reds.
Ardie Savea re-signed with New Zealand Rugby (NZR) in a boost to the All Blacks and Hurricanes.
Beauden Barrett, Damian McKenzie, captain Kieran Read and Ardie Savea are the only players to keep their places in the All Blacks side.
South Africa looked set to pull off a famous double over New Zealand, but the world champions rallied to snatch a stunning win.
Defending champions Crusaders have been boosted ahead of their Super Rugby semi-final against the Hurricanes, with Joe Moody deemed fit.