Joshua Munn (Manawatu-Wanganui) holed a 20m downhill putt for a birdie three on the third hole of a play-off to give his team the SBS Invitational title on the Otatara course in Invercargill.
He was playing off with Auckland No 1 James Eng and the pair enthralled the gallery, halving the first two playoff holes in birdies.
It was a young winning team with an average age of 20 and only No 4 Ewan Westergaard (28) was in the province's winning team a decade ago.
Manawatu-Wanganui made all of the play in the final round with Joshua Munn on 68, Tyler Hodge (69), Lachie McDonald (70) and Westergaard (71) to finish 19-under for the tournament.
Joshua's younger brother Trent played at No 5 and the pair were both under par for the four rounds.
Auckland started the final round 11 shots ahead but opened the door for Manawatu-Wanganui when No 5 Shiv Sabherwal incurred a two-stroke penalty for putting from the wrong marker on the second green.
He also dropped three shots on the first five holes of the homeward nine to go four over, while the No 3 Tae Koh dropped four shots on the outward nine.
Blair Riordan (Tasman) was the leading individual, finishing 12 under par for the four rounds, three shots ahead of Joshua Munn.
Otago struggled on the greens during the weekend but looked like getting it together with three sub-par rounds and a one-over 73 on Sunday morning.
But its chances received a setback with three players over par and the team counting a 76 and 78 in its final round total.
Simon Hollyer was the pick of the Otago golfers with a par aggregate of 288, while No 1 Brent McEwan finished two shots back on 290.
The highlight of the final round was a hole-in-one by Otago's No 4 Thomas Facer (18), with a nine iron on the 139m par 3 fourth.
Canterbury set the early pace, led by the team's No 1, Jordan Bakermans, who shot an eight-under par 64, which would have equalled the course record had a placing rule not been in place.
He was supported by Owen Burgess on 68 and Nic Kay with 69 for a 15-under total to be seven shots clear of Tasman after the opening round.
For Tasman, Takaka golfer Riordan shot 67 while Auckland No 3 Nick Voke matched Bakermans on 64 to help Auckland into third place, one shot behind Tasman.
On Saturday afternoon, Auckland made an impressive assault on par early in the second round, putting the pressure on the Canterbury quintet.
Only Canterbury No 2 Harry Bateman beat par in the afternoon with a one-under 71, as his team slipped into third place at the halfway stage.
Auckland snatched the lead by a single stroke from Tasman leaving Canterbury four shots off the pace overnight.
At this stage, all of the other teams looked out of contention, with Manawatu-Wanganui team 11 shots back in fourth place.
The top four remained the same after the third round and Auckland increased its lead to six shots over Tasman, thanks to four-under-par rounds of 68 by Jonathon Ratcliffe (No 2) and Tae Koh (No 3).
Canterbury slipped further to lie 10 shots back while Manawatu-Wanganui remained 11 shots off the pace, with a lot of work to do in the final round.
