The Hurricanes lead the way in Super Rugby after a 25-22 win over the Highlanders, while the Rebels triumphed 29-26 against the Brumbies.
Beauden Barrett kicked the Hurricanes to a last-gasp victory over the Highlanders, while the Rebels rallied to beat the Brumbies in Friday's Super Rugby action.
Fly-half Barrett held his nerve with a penalty after the final hooter had sounded to secure Hurricanes a dramatic 25-22 triumph at the end of a see-saw encounter in Wellington.
Centre Ngani Laumape crossed twice in the first half as the hosts led 14-8 at the break, though Highlanders had scored first when Aaron Smith touched down in the 11th minute.
Highlanders hit back after the interval with tries through Sio Tomkinson, who picked off a pass from Barrett to reach the line, and Liam Coltman, Marty Banks converting both to put his side 22-14 ahead with an hour gone.
Ben Lam's 71st-minute try levelled the score at 22-22 and while Barrett failed with the conversion attempt from out wide, he was on target to punish Highlanders for an infringement at a ruck as time expired.