Waikato gave Mitre 10 Premiership leaders Tasman plenty to think about before the southerners came home strongly to take the win in Hamilton on Saturday.
It was an impressive display of control as they played their way back into the contest.
Wellington dished out a hefty loss for defending champions Auckland on Sunday afternoon.
In the Mitre 10 Championship, Otago were boosted by a crossover win against North Harbour, something their southern neighbours Southland also managed when ending their win drought with a win over Counties Manukau in Invercargill.
Results from Week Seven were:
Canterbury 29 Manawatu 32
Hawke's Bay 35 Taranaki 17
Waikato 26 Tasman 35
Southland 42 Counties Manukau 14
North Harbour 15 Otago 21
Auckland 15 Wellington 34
Northland 22 Bay of Plenty 46
Full match reports via mitre10cup