Leyton Orient 2-1 Peterborough United
Friday April 22, Brisbane Road, (5,476)
A Ryan Jarvis goal deep into injury time secured Leyton Orient a vital win to boost their top six hopes and deal a body blow to Peterborough's hopes of automatic promotion.
It took until midway through the second half for the deadlock to be broken, with Posh defender Gabriel Zakuani - playing against his former club - sliding in to put a Stephen Dawson cross into his own net.
However, United hit back just eight minutes later with Nathaniel Mendez-Lang jumping highest to head a Grant McCann in.
It was the Londoners who claimed maximum spoils though, with Ryan Jarvis nodding home a deep cross from Jason Crowe to keep the O's play off dreams alive.
Orient now sit just three points off a place in the play offs - where they could still end up facing a Posh side for whom finishing in the top two is now out of reach.