Victoria pocketed its third straight Interstate Series title in dramatic style at Tasmania Golf Club.

The Vics and arch rival New South Wales played each other to a tense 4-all tie, but a deep-dive countback ensured the trophy would return to Melbourne.

NSW had entered the final day with a seemingly comfortable lead on the round-robin ladder and a finals berth booked, with Victoria first needing to down Tasmania to even get a shot at defending its crown.

But with the focus on that contest, eventually won 4.5 to 2.5 by Victoria after another tight tussle, the turning point was happening “off Broadway”.

Western Australia flexed its muscle and crushed a relaxed NSW squad 5.5 to 1.5 – the exact scoreline that would leave the Blues and Vics knotted both on contests and individual matches won, the first two deciders of final ladder position. By Interstate Series rules, the next determinant is how many matches were won by players at the No.1 position in each team through the round-robin matches and that fell Victoria’s way, 3 to 2.5.

So by that most minuscule of margins, the men’s Interstate Series was ultimately decided.

A thousand different permutations throughout the event could have generated a NSW victory with the final 4-all scoreline, but that mattered not to the Victorians who celebrated on the 18th green when a gallant James Conran conceded the final hole to Darcy Brereton, whose 2 up win provided the pivotal fourth point for the defending champs.

“We understand it’s not a conventional way to win, but we finished on top and that’s all that matters,” Victorian captain Blake Collyer said.

“Even though it’s a different looking team to the previous two years, we’re really thrilled to make it three wins in a row for the state. We all carried the load at different stages during the week and we stood up when it counted most on a long and cold final day. Tasmania and New South Wales both pushed us hard, but we didn’t break.”

Collyer and the unbeaten Kyle Michel were the cornerstones of Victoria’s title run, but Brereton, a red-hot Andre Lautee and resurgent Matias Sanchez all provided key points in the final.

The final appeared to be headed north of the Murray when Jye Pickin and Lucas Higgins saluted in the first two matches on course. Promising star Harrison Crowe continued his unbeaten week when he gave NSW another point in the third match out, a tight one against Lukas Michel.

Lautee and Kyle Michel edged Victoria closer, the latter in a quality match against Australian Amateur runner-up Nathan Barbieri.

In the anchor match, joint NSW skipper Blake Windred put on a performance for the ages in downing Collyer 6&5 in a match featuring a couple of long-range Windred holeouts among some scintillating iron play.

Windred said he felt “like I was on PlayStation” as he raced to six-under through 13 holes to put his team on the brink of victory.

But Sanchez metaphorically stood tall against the towering Josh Armstrong to win on the 17th green, then ran up the last hole just in time to see Conran’s ball plugged in the greenside bunker – a cruel blow when the young Blue had won the 17th, had late momentum and needed to win the last hole to give his state the victory.

Brereton pitched his second to five feet, then watched as Conran firstly played a quality blast shot around the contours of the green to leave himself a long par putt, which then lipped out as it broke hard late.

When Conran couldn’t make the bogey putt, he took off his hat and extended his hand to Brereton in concession mode.

One quick shake later and the Vics were back in party mode for the fifth time in six years.

In addition to Kyle Michel and Harrison Crowe, Tasmanian veteran Craig Hancock was also awarded a medal for his achievement of going undefeated through the week.

New South Wales is the champion women’s team of Australia for the second successive year.

They’d been warm favourites when the Interstate Series began and the women in blue played right up to those expectations in the final at Royal Hobart Golf Club, dismissing Queensland 5.5 to 0.5 to defend the Gladys Hay Memorial Cup they won in Adelaide last year.

Led by unbeaten co-skipper Doey Choi, who stormed home to halve her epic tussle with Queenslander Cassie Porter, the NSW women could simply not be denied.

From the first match out, won in stoic style by 14-year-old Sophie Yip with five consecutive halved holes to finish and salute 1 up, to Choi in the No.1 slot, they were on top of their game.

Co-skipper Grace Kim was five-under when she toppled a gallant Issy Taylor 3&2, Steph Kyriacou made six birdies in beating Queensland skipper Dee Dee Russell 4&2 and Kelsey Bennett made five of her own in downing Lisa Edgar 5&3.

And last year’s winning skipper Amy Chu saved her best for last after making a rushed trip back from her US collegiate base in Washington to down Sarah Wilson 2&1.

“We’re really proud of our team,” Choi said. “Having most of the girls from last year makes it feel a lot better that we can do it again.”

Grace, Australia’s top-ranked amateur who also dropped eight birdies in the 13 holes she played in the final preliminary match earlier in the day, said the loss to Victoria on day one had been important.

“It got us going. It’s only the first match, so it didn’t (ultimately) hurt us, but it got us going and to where we are right now,” the Youth Olympic champion said.

Choi had been 3 down through 12 in her match at No.1 against the impressive Porter, but told caddie Graeme Phillipson, with whom she has a substantial winning streak rolling, that she would make four birdies in her final six holes to dig herself out of that hole.

As news filtered through to Choi of her teammates’ successes, rather than relaxing in imminent team glory, it only fuelled the Concord Golf Club member’s resolve.

Sure enough, a fourth birdie from five metres on the 18th green was enough to halve her match and preserve her unbeaten streak.

“I was not letting the team down and not going to finish without a fight,” said Choi, who along with Victorian Steffi Vogel was rewarded for her unbeaten week during the presentation ceremony. “So I just gave it all I had… and here we are.”

And here looks just fine if you’re wearing blue.