Craig Dawson's late equaliser earned Rochdale a share of the spoils against play-off bound Peterborough.
Dawson bundled home Joe Widdowson's cross, and his side earlier took the lead after just 14 seconds, when Jean-Louis Akpa Akpro side-footed home.
Peterborough levelled when Nathaniel Mendez-Laing headed in Grant McCann's corner in first-half stoppage time.
They went ahead when Lee Tomlin side-footed in George Boyd's pull-back before Dawson struck from close range.
Rochdale manager Keith Hill told BBC Radio Manchester:
"I think we've had a magnificent season and it's been a massive learning curve for my self and 'flicker' (Dave Flitcroft).
"I am the most successful manager this football club has ever had, but I can't do it without the players.
"I've got no intentions of leaving, I'm planning (for next season) and my heart's with this football club."
Peterborough United boss Darren Ferguson told BBC Radio Cambridgeshire:
"It was a bad start and a bad finish to the game. Certainly the first goal was embarrassing and it knocked us sideways.
"Rochdale is a hard place to come and they're a decent football team, but we've lost two such easy goals.
"We want to go into the play-offs by winning games and at the moment we're just not winning enough games."