Fellow Northlander Kadin Neho also remained near the top after round two of three. The Boys' High golfer sat six shots off the pace to hold a share of fifth going into yesterday's final round.
Leading the pack was Bay of Plenty golfer Peter Lee, who showed why he was regarded as one of the favourites to claim the New Zealand Age Group Championship title with a two-under par 70.
Lee's bogey-free 70 in cool and windy conditions was one of only two sub-par rounds of the championship alongside Manawatu rep Trent Munn (71).
Lee, who was the beaten finalist at last year's New Zealand Amateur at Mt Maunganui, has continued the good form he has shown on the local scene this year, which has seen him win three titles.
Meanwhile, in the women's Age Championships, Brooke Kingi of Whangaroa was the highest placed of the Northlanders taking part, sitting at 18th equal.
All the Northlanders who took part in the championship made the cut.
Round 2
144: Peter Lee (Rotorua) 74 70
148: Sean Masters (Otago) 75 73, Tadhg Campbell (Muriwai) 75 73
149: Matthew McLean (St Andrews) 76 73
150: Michael Birchall (Manawatu) 77 73, Kadin Neho (Whangarei) 76 74, Chang-Gi Lee (North Shore) 74 76
151: Trent Munn (Manawatu) 80 71, Thomas Hardy (Coringa Inc) 77 74, Nick Coxon (Narrows) 76 75
152: Jared Edwards (The Grange) 79 73, Jordan Green (Ashburton) 78 74, Harry Yang (Pupuke) 78 74, Denzel Ieremia (St Andrews of Hamilton (Hamilton)) 78 74, Jacob Roberts (Russley) 77 75, Charlie Hillier (Te Puke) 77 75, Harry Hillier (Te Puke) 75 77
153: Tom Hunt (Australia) 80 73, Jason Yoo (Waitikiri) 80 73, Taylor Gill (Bay of Islands Kerikeri Incorporated) 80 73.