They are in fine spirits for the match which kicks off at midday, packing into the Fans Zone and the areas around the ground ahead of the turnstiles opening at 10.30am.
Young families are among the fans at Fratton Park, and for some this is their first ever South Coast derby.
Pictures: Marcin Jedrysiak
17. Portsmouth v Southampton
Pictured: Portsmouth Fans before the Game Picture:Marcin Jedrysiak | Marcin Jedrysiak
18. Portsmouth V Southampton
Pictured: Portsmouth Fans before the Game Picture: Marcin Jedrysiak | Marcin Jedrysiak
19. Portsmouth V Southampton
Pictured: Portsmouth Fans before the Game Picture:Marcin Jedrysiak | Marcin Jedrysiak
20. Portsmouth V Southampton
Pictured: Portsmouth Fans before the Game Picture:Marcin Jedrysiak | Marcin Jedrysiak
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