Joe Pigott's late penalty saw AFC Wimbledon boost their League One survival hopes with a dramatic 1-0 victory over 10-man Peterborough.
Piggott's spot-kick following Rhys Bennett's foul just three minutes from time ensured Wally Downes' team are now just four points adrift of safety, after four wins in their last six.
Anthony Wordsworth hooked the ball over early on for rock-bottom Wimbledon and Peterborough's Matt Godden fired wide before Steve Seddon wasted the best chance of the half.
The Wimbledon man planted a tame header straight at visiting goalkeeper Conor O'Malley when well-placed.
Posh started the stronger after the break and Ivan Toney was denied only thanks to an alert reaction save from Aaron Ramsdale.
Marcus Maddison was then kept out thanks to a good Ramsdale save before Toney flashed wide.
Dons sub Dylan Connolly struck a fierce shot which cannoned back off the bar but he made a major contribution to the game's turning point.
Connolly was felled by Posh defender Bennett, who was given a straight red card, and Pigott then stepped up and fired home his 12th goal of the season to seal a vital win for the hosts.