The 64th-minute substitute, who came on for Callum Lang, collected Marlon Pack’s pass to race through and net past Oxford keeper Jamie Cumming in front of the Fratton End to secure a 2-1 vicory.
Earlier Lang’s 88-second opener was cancelled out by Cameron Brannagan’s penalty and it remained a close contest. with neither side managing to dominate.
Yet Saydee was the hero – and here are our Pompey player ratings...
13. Christian Saydee - 8
(Replaced Callum Lang on 64 mins) What an entrance. Took his goal superbly after put through by Pack - then conjured up a goal-line clearance at the other end. Bounced a couple of Oxford players off him too. Photo: Jason Brown
4 / 5