Three points at a packed Fratton Park that was bathed in summer sunshine – a perfect start to the new season.
But Kenny Jackett conceded that the result against Luton was much better than Pompey’s performance.
The only goal of the contest was scored on 16 minutes, as debutant Ronan Curtis cut the ball back for Jamal Lowe to slot home.
Jackett had no complaints about the effort shown by his side, although he wants to see more from them on the ball.
The Blues boss said: “We showed terrific heart and spirit, with some very good defending, although we didn’t have enough going forward.
“Our ball retention didn’t help us until Ben Close came on and we managed to find a few passes to take the sting out of the game.
"We’re going to need the qualities we did show throughout the game, but does the build-up and possession need to be better? Yes."
“Pearson and Sheehan won too many headers in both halves and the service needs to be better for our forwards.
“We’re going to need the qualities we did show throughout the game, but does the build-up and possession need to be better? Yes.
“There are things we need to add to a committed display because for the home side, we had very few chances.
“I was pleased with the goal – it was a good run from Ronan down the right hand side and he pulled it back well for Jamal, who made the finish look easy.
“It was a key moment that ultimately won us the game, but we just didn’t create enough from that point.”
Brett Pitman was substituted for Oli Hawkins at half-time and Jackett explained why he chose to take off his skipper.
He said: “I just didn’t think it was a day for him and that perhaps Oli was more suited to it. We weren’t getting Brett enough service.
“Nathan Thompson also came off with a knee injury and we hope he’s okay. He’s a quick healer and I’m sure he’ll be fine.”