The Blues achieved unlikely progression from Southern Group B as George Hirst’s injury-time strike forced a four goal swing that allowed the club to leapfrog AFC Wimbledon and Crystal Palace under-21s into second position.
And by doing so, they join a number of League One and development teams in the bookies reckoning to win the competition.
Rivals such as Sunderland, Sheffield Wednesday, Ipswich and Bolton also qualified for the round-of-32, albeit in more comfortable fashion than Danny Cowley’s side.
As a result, we’ve compiled a list on the favourites to find success at Wembley thanks to SkyBet’s odds.
Click through the list to see where Pompey rank.
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Rivals such as Sunderland, Sheffield Wednesday, Ipswich and Bolton also qualified for the round-of-32, albeit in more comfortable fashion than Danny Cowley’s side.
9. Fleetwood Town - 25/1
Northern Group G position: 2md Wins: 2 Draws: 0 Losses: 1 (Photo by Lewis Storey/Getty Images)
Photo: Lewis Storey
10. Accrington Stanley - 25/1
Northern Group G position: 1st Wins: 2 Draws: 1 Losses: 0 (Photo by Jacques Feeney/Getty Images)
Photo: Jacques Feeney
11. Pompey - 20/1
Southern Group B position: 2nd Wins: 1 Draws: 0 Losses: 2 Picture: Robin Jones/Digital South
Photo: Robin Jones
12. MK Dons - 20/1
Southern Group C position: 2nd Wins: 2 Draws: 0 Losses: 1 (Photo by Pete Norton/Getty Images)
Photo: Pete Norton