Hamilton's Peter Bocock top-scored with 59 as they closed in on the target. Captain Boult went to 15-year-old Tim Pringle to bowl the last over, with the youngster taking a dramatic wicket to force a rare tie.
Opening batsman Joe Carter made the individual highlight in smashing 122 not out off 64 balls against Poverty Bay on day two. It was the first Twenty20 century for Bay of Plenty and Carter's seventh ton for Bay of Plenty behind just Bharat Popli (10 centuries).
ND Brian Dunning One-Day Tournament
Points: Northland 8, Bay of Plenty 7, Counties Manukau 6, Hamilton 5, Waikato Valley 4, Poverty Bay 0
Day Three
Northland 154/7 (H Cooper 82; JJ Boult 3/15) defeated Bay of Plenty 153/7 (SB Davey 55, RPO Drysdale 20; B Hyde 3/20)
Hamilton 151/8 (P Bocock 59; T Clout 2/14, JJ Boult 2/25, SB Davey 2/27, T Pringle 2/27) tied with Bay of Plenty 151/6 (JJ Boult 67, JF Carter 23, SB Davey 23; S Dovey 4/28)
Day Two
Counties Manukau 143/8 (J Mills 35; SB Davey 3/36, JJ Boult 2/19) lost to Bay of Plenty 144/9 (JJ Boult 35, B Musgrave 28; J Mills 4/27)
Bay of Plenty 233/3 (JF Carter 122no, B Popli 44, SB Davey 38no) defeated Poverty Bay 118/8 (SB Davey 2/10, TJ Clarke 2/14, RPO Drysdale 2/16)
Day One
Bay of Plenty 151/6 (JJ Boult 65no, SB Davey 45; Y Kumar 2/19) defeated Waikato Valley 142/7 (SD Cooper 61; T Pringle 2/17, SB Davey 2/19, JJ Boult 2/30)