Despite the Blues’ season being all but over after missing out on the play-offs, 3,120 supporters made the trip to Pride Park for the final away fixture of the campaign.
The Fratton faithful’s magnificent following helped John Mousinho’s men to a 1-1 draw against promotion-chasing Derby.
In fact, the fixture was the second-most watched contest in League One this season with 31,744 in attendance.
But how does the Blues support compare across the EFL?
We’ve taken a look at the highest away followings from across the Football League last weekend to discover where Pompey’s figures rank.
13. Barnsley fans at MK Dons - Stadium MK
Away attendance: 2,100 (estimate); Overall attendance: N/A; Photo: George Wood
14. Burnley fans at Bristol City - Ashton Gate
Away attendance: 2,956; Overall attendance: 24,065. Photo: Matt McNulty
15. Pompey fans at Derby - Pride Park
Away attendance: 3,120; Overall attendance: 31,744. Photo: Jason Brown
16. Birmingham fans at Coventry - CBS Arena
Away attendance: 4,500; Overall attendance: 30,175. Photo: Cameron Smith