Watch key moments from League Two defeat
Pompey's unbeaten start to the League Two season was ended by Exeter at Fratton Park.Gareth Evans twice went close in the opening stages, only for David Wheeler to fire the visitors ahead.
Arron Davies headed home a second for the Grecians after the interval, before Jayden Stockley saw a header cleared from the line.
Substitute Gary Roberts grabbed a stoppage-time consolation, but it was not enough to prevent the Blues from relinquishing top spot in the table.
Watch the key moments from the game below or subscribe to Pompey PlayerHD for extended highlights.