It will be a game that will live down the ages with none of the fans there on Friday night likely to forget it.
Our match photographer David Lowndes took these pictures of just some of the packed out crowd.
Have a look at our gallery and see who you know.
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57. Posh 4 Wednesday 0
Peterborough United fans enjoying Friday night's whopping win. Photo: David Lowndes
58. Posh 4 Wednesday 0
Peterborough United fans enjoying Friday night's whopping win. Photo: David Lowndes
59. Posh 4 Sheffield Wednesday 0
Posh fans enjoy the win over Sheffield Wednesday at London Road. Photo: David Lowndes
60. Posh 4 Sheffield Wednesday 0
Posh fans enjoy the win over Sheffield Wednesday at London Road. Photo: David Lowndes
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