Emile Sinclair scored the only goal of the game as Peterborough beat the Championship's bottom side Coventry.
Andy Thorn's side now sit eight points from safety with just two wins so far.
The only goal came midway through the second half when Sinclair was on hand to score after Joe Murphy saved an initial shot from Paul Taylor.
Coventry were unlucky not to take a point after Gary Gardner hit the post while Lukas Jutkiewicz had an effort cleared off the line in injury time.
Going into the game both sides were desperately out of form with Peterborough having won just one of their last nine, while Coventry had lost six of their last seven.
The Sky Blues defended resolutely in the first half, giving the home side few opportunities to break the deadlock, and they went close themselves when Gardner's set-piece forced a solid save from Joe Lewis.
Daniel Kearns went close on his full debut for Posh but Murphy saved well with his feet.
George Boyd nearly scored for the home side before Coventry appealed for a penalty when Craig Alcock appeared to handle in the box, but the referee waved away the protests.
Jutkiewicz and Chris Hussey also went close for visitors before Sinclair hit the winner.
Just one side in 12 seasons have avoided relegation from the Championship when they were bottom at Christmas, so Thorn's side will now have to defy the odds to stay up.