Naismith and Smith also score in friendly
Goals from Conor Chaplin, Kal Naismith and Michael Smith saw Pompey beat a young Reading side 3-1 in a friendly at their Copnor training base.
But the Blues were pushed hard by their Berkshire opponents and Alex Bass was in fine form to keep them at bay before the interval.
Chaplin struck the opener on nine minutes, on hand to convert when a corner from Ben Davies was headed back across goal by Adam McGurk.
Liam Kelly struck the crossbar at the other end of the pitch and after the ball bounced back into the mix, Bass made a magnificent save to deny Harry Cardwell.
The teenage keeper was called into action again moments later, getting down low to his left to claw away Lisandro Semedo’s effort.
But Pompey doubled their advantage just before the break when McGurk’s quick throw sent Gareth Evans away down the right and he teed-up Naismith to score.
Smith was one of several substitutes introduced during the second half and made an immediate impact when he shot narrowly past the post.
Reading then reduced their deficit, with Sammi Fridjonsson finding the net at the second attempt after his first effort had been kept out by Nick Hall.
It was the Blues who had the final say, however, with Smith firing home following good work from Kaleem Haitham.
Pompey: Bass (Hall 60); Davies (Freeman 46), Widdrington, Barton (Haitham 71), Haunstrup; Oxlade-Chamberlain (Burgess 46), May; Evans (McNulty 60), Chaplin (Roberts 60), Naismith; McGurk (Smith 60)
Reading: Ward (Driscoll 81); Sheppard, Shaughnessy, Fridjonsson, Lawal (Scheving 60); Semedo, Husin (Mirimar 46), Rinomhota (Collins 46), Novakovich (Behram 46); Kelly, Cardwell
Referee: Alex James