Pompey produced a convincing performance to breeze past Northampton at Fratton Park.
They won 4-1, despite playing almost half the game with just 10 men following a controversial red card for debutant Tom McIntyre.
Connor Ogilvie headed home the opener before Paddy Lane struck in each half and Callum Lang volleyed into the net.
Marc Leonard grabbed a late consolation for the Cobblers, but the day belonged to John Mousinho's men.
Fans can watch the key moments (top video) or register with iFollow to view extended highlights and a full match replay.
If the full match replay is playing the wrong audio, you can use the settings cog to toggle between home and away commentary.