The latest full match replay powered by Utilita is from the final day of the 2016/17 campaign.
Pompey had already secured promotion from League Two, but began the day sitting third in the table.
They had to win and hope that both Plymouth and Doncaster dropped points in order to climb into top spot.
Paul Cook's side comfortably did their job, with Kal Naismith's brace, efforts from Kyle Bennett, Jamal Lowe and Gareth Evans, and a Daniel O'Shaughnessy own-goal sealing a 6-1 rout of Cheltenham.
There was then a nervous wait to hear that other results had also gone their way, before jubilant fans ran onto the pitch to celebrate with their heroes.