Joe Morrell’s 75th-minute penalty appeared to have secured victory for the Blues, with Paddy Lane having earlier missed from the spot.
However, Bognor’s number 10 – announced as a triallist – levelled in the 87th minute to ensure the Nyewood Lane match finished 1-1.
Having introduced 11 different players at the break, with the scoreline goalless, there were some encouraging showings in the second period.
Here are our player ratings for the second half...
5. Jack Sparkes - 7
Drove up and down the left flank, showing plenty of attacking intent, while one great cross from the left was almost finished first time by Folarin. Really encouraging start to Pompey career. Picture: Portsmouth FC Photo: Portsmouth FC
6. Joe Morrell - 8
Handed the captain’s armband and anchored the midfield in a good display for his first pre-season outing. Also stepped up to take Pompey’s second penalty after Lane’s earlier miss and finished it superbly. Photo: Jason Brown
7. Terry Devlin - 6
Won first penalty in 55th minute and showed some energy. Grew into proceedings, with some great glimpses of talent. Looking forward to seeing more of him. Photo: Portsmouth FC
8. Ben Stevenson - 6
Never seems to catch the eye, but rarely puts a foot wrong and looks completely in control of everything he does. Augurs well. Picture: Portsmouth FC Photo: Portsmouth FC