A 5-0 win took the bragging rights in style with a brace from Ephron Mason-Clark and Kwame Poku doing the damage.
Our photographer David Lowndes was on hand to capture these happy faces in the crowd.
Get full reaction to the win here.
Get full reaction to the win here.
37. Posh 5 Cambridge United 0
Peterborough United fans enjoy a big win over Cambridge United. Photo: David Lowndes
38. Posh 5 Cambridge United 0
Peterborough United fans enjoy a big win over Cambridge United. Photo: David Lowndes
39. Posh 5 Cambridge United 0
Peterborough United fans enjoy a big win over Cambridge United. Photo: David Lowndes