Bay of Plenty secured a first win of the 2014 ITM Cup to pile further misery on Championship rivals North Harbour.
First-half tries for James Parsons and Greg Pleasants suggested Harbour were to be on ones who would break their 2014 duck at Baypark Stadium.
But prop Michael Kainga's try and Nick Evemy's penalty kept the Bay in touch as they went in 14-10 down at the interval.
Leroy Van Dam touched down two minutes into the second half to put the hosts in front, with two further penalties from Evemy and some dogged late Bay defending shedding light on their campaign.
Manawatu continue to top the Championship after overcoming Premiership strugglers Counties Manukau 26-10 at FMG Stadium.
A scrappy first half saw Manawatu come out on top two penalties to one.
But they turned on the style in the second period, Jason Emery and Te Rure crossing to put the hosts 20-3 up and firmly in charge.
Onosai Tololima-Auva'a went over to give Counties false hope, which was extinguished by two late penalties from promising first five-eighth Otere Black.