Emma Jones struck the winning runs as The Blaze secured a domestic treble by edging a last-ball thriller with Hampshire to lift the Metro Bank One Day Cup.
Kirstie Gordon’s side had already lifted the Vitality Blast and Vitality T20 County Cup, but dug deep to win by three wickets after needing 17 from the last two overs and then two off the final ball.
Jones was the hero with an unbeaten 34 from 25 balls including the game-clinching boundary, after Tammy Beaumont and Georgia Elwiss had scored half-centuries in the chase of 252.
Earlier, Lucy Higham had taken 4/49 to help restrict home side Hampshire, who were also losing finalists in 2025, to 251-9, with Ella McCaughan and Freya Kemp whacking fifties in vain.
The Blaze won the toss and, through the miserliness of Grace Ballinger and Charley Phillips, only allowed 11 runs in the first five overs, and that pressure told with two wickets before halfway.
The in-form Maia Bouchier couldn’t make it three centuries in a row when she holed out to long on before Georgia Adams slapped straight to mid-off shortly afterwards, both falling to Higham.
The hosts kicked back as McCaughan and Kemp dominated the middle overs with a 67-run stand and were 166 for two in the 32nd over. But The Blaze used their final nous to pull things back.
Higham added wickets three and four of the afternoon by having Freya Kemp stumped and Naomi Dattani caught in a one-handed spectacular grab by Kirstie Gordon at mid-on.
The spinner has taken 14 wickets in eight matches since the return from The Hundred, with this return representing her third four-for in that period.
Pacer Phillips dismissed Rhianna Southby, Abi Norgrove and Amanda-Jade Wellington in three overs in a row, as Hampshire slumped to lose six wickets for 54 runs across the final 11 overs.
In response, Sarah Bryce and Tammy Beaumont made mincemeat of the bowlers for 15 overs, as they strode towards the target.
The pair put on 95 with ease, only for Wellington to spin things by seeing off both Bryce sisters in an over, with Sarah caught at deep square leg before Kathryn was taken at slip.
Beaumont, with the help of Georgia Elwiss, kept things ticking, although the former England opener lived a charmed life as she was dropped three times and also survived a stumping chance.
Her luck ran out, having scored her fifth half-century of the campaign, when she was lbw to Wellington, sparking three wickets to fall in 26 balls.
With 30 still needed, Gordon was then caught, meaning there was 17 required from the last two overs, but Jones took the sting out of things.
An inventive reverse pull and a straight drive both went to the boundary, and despite a run out with the third ball, she took her side to victory with a swept four off the final ball of a classic.