The Blues had led through Josh Murphy’s third-minute goal, albeit taking a heavy deflection on the way into the net after Paddy Lane had teed him up.
Will Norris then pulled off several good saves before Pompey fan Tommy Leigh levelled on 62 minutes as the match finished all square.
Pompey used 18 players, of which six were introduced in the 79th minute, as John Mousinho’s preferred starting XI becomes clearer – and here are our Blues player ratings...
9. Paddy Lane - 6
(Replaced by Callum Lang on 62 mins) Teed up Murphy for the opener, but other than that early assist was very quiet. Couldn’t quite click with Williams when the pair had some decent situations on the right flank. Photo: Jason Brown
10. Sammy Silvera - 7
(Replaced by Terry Devlin on 79 mins) Operated in the number 10 role and one first-time right-footed cross almost crept in at the far post during the first half. Quick feet, loves to carry the ball and has a real energy about him. Interesting season ahead. Photo: Jason Brown
11. Josh Murphy - 8
(Replaced by Gavin Whyte on 79 mins) Has been one of the eye-catching performers during pre-season and this was another occasion. Grabbed a third-minute goal - his second of the summer - and caused constant problems down the left. Loves to hog the touchline and always eager to take a full-back on on the outside. Photo: Portsmouth FC
12. Kusini Yengi - 5
(Replaced by Christian Saydee on 79 mins) Can expect a run in the side in the absence of Bishop, but just couldn’t get involved against MK Dons. Held up the ball well on occasions and contributed in the build up to Murphy’s opener, yet far too much on the periphery. Photo: Jason Brown