Tara Moore, the British world No. 479, completed one of the most remarkable comebacks in tennis history on Tuesday by overturning a 0-6, 0-5, 30-40 deficit and ultimately prevailing in three sets.

Competing in Sunderland in the first round of the International Tennis Federation World Tour event - the lowest rung of professional tennis - Moore was a point away and inches from suffering the dreaded double bagel against third seed Jessika Ponchet.

Down match point, Moore, 26, hit a smash that clipped the top of the net and looked to be drifting out but bounced agonisingly on the line. Buoyed by the reprieve, Moore held serve and completely turned the match around against her wilting opponent.

Moore pinched the second set 9-7 in a tie-break, before winning the decider to complete an improbable, impossible-looking victory 0-6, 7-6, 6-3. Afterwards a still disbelieving Moore tweeted: "Never in doubt".

Tennis's governing bodies could not confirm on Tuesday night if it was the biggest choke in the sport's history, but in games terms it is the maximum lead a player can blow in a best-of-three-sets match.