Posh led for most of the game before a side who have only lost five times all season grabbed an injury-time leveller.
There were some excellent individual displays from a Posh team now unbeaten in their last six competitive matches.
Ratings Key: 10-Out of this world, 9-Outstanding, 8-Very Good, 7-Good, 6-Okay, 5-Poor, 4-Stinker.
9. CIAN HAYES
He looked a threat when running at defenders and might have won Posh a second penalty in the first half. Replaced by Poku late on, but he didn't let Posh down in this game - 7. Photo: David Lowndes
10. ABRAHAM ODOH
The winger won the penalty for Posh with a forceful run and showed some neat touches throughout - 7. Photo: David Lowndes
11. BRAD IHIONVIEN
A couple of bright bursts which finished with shots being deflected. The only player to be cautioned by the latest dozy referee and the first to be substituted - 6. Photo: David Lowndes
12. RICKY-JADE JONES (sub for Ihionvien, 60 mins)
He caused problems with his speed, but missed an absolute sitter to win the game in added time - 5. Photo: DAVID LOWNDES