Police closed off the road as pockets of fans took out their frustration as the game was snatched late on by Plymouth at Fratton Park this afternoon.
Two late goals in the space of a minute earned Plymouth a valuable win over play-off rivals Portsmouth.
Michael Smith's diving header gave Pompey the lead before Gary Roberts shot over after dribbling through.
Danny Hollands and Christian Burgess had chances to extend their lead but they were punished on 86 minutes.
Three police dogs showed misbehaving fans how to behaviour as the game literally went to the dogs. Most fans left the ground dishearten and let down with the result. But a few fans wanted to show visiting support their upset. Police quickly took control and restored order.No. arrested were made.