It looked being a dominant victory for Pompey at AFC Wimbledon.
Goals from Tom Naylor and Gareth Evans had given them a comfortable half-time advantage and there were plenty more opportunities either side of the break.
The three points were eventually secured, although James Hanson’s consolation ensured the finale was nervier than it might have been.
Kenny Jackett conceded that his troops had to deal with plenty of late Dons pressure at a sunny Kingsmeadow.
But he was delighted to extend an away record that has seen just two points dropped from seven fixtures this season.
The Blues boss said: “We were well in control for an hour and had got ourselves in a good position. There were a lot of chances and we had the ball in positive situations.
“We had to find a different way of playing with three of our four natural wingers out. It shaped my thinking about the balance of the team and that’s why you want a strong squad.
"We’d have liked the ending to be more comfortable, but it’s been an outstanding away record this season."
“But they brought the three subs on and got some momentum, although we found a way of seeing it through in the last half-an-hour.
“It wasn’t as calm as it looked it might be at one stage and we did well to come through the pressure Wimbledon put on us.
“We’d have liked the ending to be more comfortable, but it’s been an outstanding away record this season.
“Now we want to crack it at home and we’ve got games coming up against Fleetwood and Burton to try to do that.”
Ben Thompson partnered goalscorer Naylor in the centre of midfield and Jackett was pleased with his performance.
He said: “Ben’s a very good player. He’s been outstanding in some of his games and then struggled with the pace of it in a few others.
“It is a learning curve when you come into a club and also one in a different division, while he hasn’t had regular football in a while.
“My expectation is that he’ll settle down and go from strength to strength. I think he can be a mainstay for us.
“There have been some ups and downs so far, but he showed excellent ability and character. He played well.”