Posh fielded a much-weakened side and were defeated 2-0 by a motivated Cheltenham side who kept themselves alive in League One with victory.
Posh are now set to finish fourth in the table unless they record an unlikely thumping of Bolton on the final day.
RATINGS KEY: 10-Out of this world, 9-Brilliant, 8-Excellent, 7-Very Good, 6-Okay, 5-Poor, 4-Stinker
13. PEMI ADEROJU (for Jones 56 mins)
Didn't see much service but good to see him get more minutes in the tank. Photo: Joe Dent
14. JACOB WAKELING (for Dornelly 72 mins)
Another one where it was just good to see him back on the pitch. Had a couple of strong runs. 6. Photo: Joe Dent
4 / 5