Burdett birdied the final two holes of his morning round to take the lead before Nisbet joined him late in the day after a round of 69 was added to his brilliant opening day 64.
“It could have been anything today," said Nisbet who earlier in the year won the New Zealand Open Championship. “I hit a couple tight in there and just didn’t nail the putts.
“I always travel with a second putter, whether I use it or not, it just gets my mind of a bad putting day. It takes my mind off the current putter and I will probably play with the same one tomorrow. But it’s nice to roll a few with a different putter to recalibrate how I am going about it.”
Nisbet has struggled since his NZ Open win having missed the weekend in seven of his eight starts since but the two time Australian Junior Champion has even more talent than he has shown to date in the professional ranks.
Burdett, who also had one of his best finishes on the Australasian Tour when 11th at the New Zealand Open in March, was essentially treading water before his late burst which swept him into the lead.
His very best finish to date on the Australasian Tour was when 3rd at the 2017 Queensland PGA title.
"I haven't been playing great the last couple of months but have put some different clubs in the bag," said Burdett. But I changed clubs back to some old ones so that could be the recipe."
Deyen Lawson, Kade McBride, Damien Jordan and Jake Higginbottom, are tied in 3rd place and just one back of the lead.
Lawson and Daniel Gale recorded the best rounds of the day (65).
Defending champion Travis Smyth, who won this event as an amateur last year, is in 29th position at 3 under and six from the lead.
The cut fell at even par with 51 players making it through to the weekend in the A$150,000 event.
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