They were all part of John Mousinho’s squad, as Pompey successfully maintained their place in the Championship last season at the first time of asking.
But all of these players have moved on, after not being deemed part of the plans at PO4 this term.
Whether it was the end of their loans, being released or sold before the close of the summer transfer window, the 20 players now find themselves elsewhere.
It may be relatively early days but the fortunes of those former Fratton players are wildly varying, so we’ve caught up on how they are all now faring.
17. Kaide Gordon - Liverpool
One Vertu Trophy appearance for Liverpool under-21s, after staying at Anfield this summer when returning from Pompey loan stay. Made the bench as an unused sub for the first team against Southampton in the Carabao Cup. | Liverpool FC via Getty Images
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18. Freddie Potts - West Ham
Three Premier League outings this season at West Ham, with Hammers fans frustrated by Potts lack of minutes under Graham Potter. Very early under days under Nuno Espirito Santo, but featured in both of his games - against Everton and Arsenal - so far. | Getty Images
19. Mark O'Mahony (Reading)
Gained plenty of playing time during latest loan move to Reading - with 12 outings and a single goal to his name under Noel Hunt in League One. | Getty Images | Getty Images
20. Ryley Towler - Lincoln City
Many heavy Pompey hearts at seeing Ryley Towler leave permanently for Lincoln, but now getting the minutes which were in short supply at Fratton Park - 13 games and 11 starts so far for the Imps. | AFP via Getty Images