See the New South Wales side secure top spot on the ladder with another impressive win.
The Waratahs secured their first Super Rugby minor premiership with a 44-16 rout of the Highlanders in Sydney.
The Waratahs overpowered the New Zealanders on Sunday afternoon to book a precious home semi-final with a six-try romp and club-record sixth consecutive win.
The Australian conference champions face the Queensland Reds in the last round on Saturday before enjoying a break during the opening week of the finals.
If they win their semi-final, the Waratahs will host the grand final on August 2 at their Sydney Football Stadium fortress, where they are unbeaten since last year.