A Super Rugby loss came as a significant shock to the Crusaders, but it was a familiar feeling for Waratahs as they fell short again.
Alex Mafi crossed three times as the Reds thrashed Waratahs on Saturday, while the Chiefs edged out the Blues late on.
Len Ikitau and Andy Muirhead scored twice to set the Brumbies on their way to a 42-14 victory over Western Force on Friday.
Jordie Barrett staked his claim for an All Blacks starting spot as he scored 30 points in the Hurricanes' 30-19 win over the Highlanders.
The Blues' barren run against the Crusaders continued on Sunday as Richie Mo'unga took centre stage.
The Chiefs trailed 26-7 at half-time but scored four second-half tries to get past the Hurricanes 35-29.
The Waratahs left their rally far too late in a fourth straight defeat on Friday, losing to a Rebels team inspired by Matt Toomua.
The Blues scored five tries in a blistering display as they crushed the Highlanders to claim their second win in Super Rugby.
The Reds won in remarkable circumstances in Super Rugby AU, while the Super Rugby Aotearoa champions prevailed in much more routine fashion.
Western Force pushed hard for a late comeback but the 14-man Rebels survived to record an important victory.