Clarence completed one of the biggest upsets in TSLW history on Saturday, picking up a 9.3 (57) to 8.6 (54) win over the previously undefeated Launceston unit.
The Blues boasted a percentage of over 850 throughout the season, defeating Clarence comfortably twice and were looking on track to do the same early in the high-scoring contest.
Having the better of the high-scoring shootout, Launceston held a slender 10-point lead at both the main break and three-quarter time before the wind and rain set in, getting the better of heavy favourites.
Late inclusion Maddison Smith showed no signs of the shoulder injury that kept her out of action in previous finals games and was named best on ground, kicking four goals in crucial moments for the Kangaroos.
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Rachel Archer stood up across half-back - taking several key intercept marks while young gun Amy Prokopiec pushed through the centre with precision.
Standing toe-to-toe in a riveting first-quarter contest, Clarence got the better of the Blues early but Launceston steadied through Chloe Haines, Daria Bannister and Camila Taylor to be leading by 19 points at the end of the first.
Clarence sensed danger and threw North Melbourne star Nicole Bresnehan straight back into defence but the 'Roos did their best work forward of the play, kicking three goals to one as Launceston stewed their opportunities but still held the lead.
A goal each in the third kept the game within 10 with Smith putting on an clinic to secure her fourth for the day, weaving around Launceston captain Ashlee Carey before dribbling through a classy finish from the right-corner pocket to the delight of the Southern crowd.
Megan Harper opened the scoring in the last off the back of supreme delivery from Bronte Scott to put the home side within four points before the wind and rain set in and, blowing towards the Derwent, Clarence were able to take advantage with Jessie Williams grabbing the lead and securing the victory.
Victorious coach Andrew Smith struggled to contain his excitement after the history-making win.
"It's a bit of relief really, it's been a really long week and finals series really," he said.
"I think after quarter-time, we started to compete better behind the ball and structure better behind the ball, getting the game on our terms.
"It came down to a slug-fest in the following quarters and I think we got our mechanisms right."
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Setting the tone for a heated clash through the weeks following Captain Grace Mitchell's claims of Launceston selfishness, Smith praised his side's self belief despite having all the odds stacked against them.
"We had a bit of self belief based off how we played in the first semi and the preliminary final that our best, if good enough for long enough, could make a competitive game out of it and coming down to the last minutes, we got our nose in front.
"Our top end players played really well, our middle tier played above themselves and the bottom tier players stood up so it was a real team effort."
In the Launceston rooms, a somber mood was met by an overwhelming sense of positivity from coach Ange Dickson.
"In the end, we let it hurt for as long as we need it to and in the end, we still had a fantastic season and to go 16 straight, I couldn't be prouder of our group," she said.
"Unfortunately, we stumbled at the last hurdle but I'm just so happy with the way we've attacked this season and honestly I think look out next year because we will be back."
Ruing the last-quarter change of fortunes due to the blustery weather conditions, Dickson couldn't fault her side's effort as their opponents made amends for last year's grand final loss.
"Our girls had an amazing game. In the end, the weather probably hit us at the wrong time in the quarter and the rain came in and we were against the wind with Clarence fighting well.
"In the end, they deserved to win."
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