Watch key moments from League Two triumph
Pompey battled from behind to win 3-1 at Cambridge in a contest that was packed full of incident.Robbie Simpson fired the hosts ahead in the opening stages, despite the linesman raising his flag for offside.
A scuffle then broke out at the interval, which resulted in United skipper Mark Roberts being sent off.
The Blues made the most of their numerical advantage, drawing level through a Leon Legge own-goal before Matt Tubbs grabbed a brace.
Pompey were then reduced to 10 men themselves when Gareth Evans was dismissed for a late challenge on Elliot Omozusi.
Watch the key moments from the game below or subscribe to Pompey PlayerHD for extended highlights.