Fareham ladies scored twice in the last ten minutes, the second close on stoppage time, to beat Southampton 2-1 and halt the city girls' advance up the South Women's League Division 3B table.
Southampton had moved into a potentially challenging fourth play-off place after winning five of their six previous matches before and after the winter break.
And when a defence splitting pass from Nat Romain teed up a first minute goal for Abi Woodcock the visitors had every reason to believe their recent good run might continue.
"We started off playing aggressively as a unit, and the sustained pressure gave us the opportunity for that early goal," reflected Southampton's Sue Merry.
"We had multiple phases of attack and remained in the Fareham half of the pitch for the majority of the first half."
Vicky Field had Fareham's best goalscoring chance in the opening half, while soon after the break Live O'Mahony forced a great save from Ela Stachow, the Fareham goalie, with a volley shot from a ball in from Bernie Jones.
Fareham had to defend well to prevent Southampton from extending their lead, but their perseverance was rewarded when, ten minutes from time, an effort from Vicky Field caught a defender's stick and deflected an equaliser past the unfortunate Linda Dunham.
With a minute left on the clock, teenager Bel Capper drove into the right hand side of the Southampton D and pulled the ball back to Vicky Field, whose swift pass to Laura Ryan set up Fareham's late winner.
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