Blackpool shocked the League One leaders at the DW Stadium.
The Seasiders are now for points clear of the relegation zone.
Click here to listen to reaction to the victory from manager, Gary Bowyer:
Click here to listen to reaction from goalscorer, Armand Gnanduillet:
There's full match commentary of Blackpool v Peterborough on Sunday on Radio Wave's Game On, with our coverage at Bloomfield Road starting at 2pm.
Elsewhere Fleetwood Town's poor home form continued as they went down 2-1 to Shrewsbury at Highbury, a result that leaves them just two points above the bottom four.