But the Blues faithful put on a show in the stands, as they stood defiant as their team capitulated against the big spenders.
Just over 2,000 Pompey supporters backed their team to the death, with our photographer, Dennis Goodwin, there to capture those in the away end.
Check out if you made it into our gallery capturing followers in the Midlands.
25. Sports celebrate Dan Jarvis winning goal.jpg
Peterborough Sports celebrate the winning goal from Dan Jarvis (left). Photo Darren Wiles Photo: Photo Darren Wiles
26. Pompey fan gallery
Pompey fans defiantly backed their team as they were battered 4-0 at Birmingham City. Pic: Dennis Goodwin/ProSportsImages | Dennis Goodwin/ProSportsImages
27. Pompey fan gallery
Pompey fans defiantly backed their team as they were battered 4-0 at Birmingham City. Pic: Dennis Goodwin/ProSportsImages | Dennis Goodwin/ProSportsImages
28. Pompey fan gallery
Pompey fans defiantly backed their team as they were battered 4-0 at Birmingham City. Pic: Dennis Goodwin/ProSportsImages | Dennis Goodwin/ProSportsImages