Pompey saw their four-match winning run come to an end after being held to a draw at Charlton.
But defeats for Derby and Bolton meant it was a fairly productive weekend for John Mousinho’s table-topping side.
There were chances to convert one point into three, with Paddy Lane hitting the bar, while Owen Moxon and Myles Peart-Harris also went close.
Mousinho was not too disappointed that The Valley spoils were shared, although he wants his troops to ensure they keep their standards high.
The Blues boss said: “It’ll be a good point if we can follow it up next weekend – I said a similar thing when the lads were disappointed after the draw at Oxford.
“We’ve come away from home and drawn 0-0, when we probably should have won, so we dust ourselves off and have to be ready to go again.
“Charlton pressed well, had a lot of energy and there were good players for them to bring off the bench.
“I’m sure they’ll cause plenty of problems for other teams at home, while they took a point up at Bolton the previous week, which is no easy feat.
"I don’t think there would have been any complaints about the result if Myles had nestled the ball in the net at the end."
“The game became a bit frantic in the second half, but once we settled ourselves down and made some changes, we looked the more likely side to win it.
“We were able to create some excellent opportunities and I thought their keeper made some really good saves.
“I don’t think there would have been any complaints about the result if Myles had nestled the ball in the net at the end, but we’ve kept the clean sheet and saw it out pretty well.”
Connor Ogilvie went off following a clash of heads, while Conor Shaughnessy had to change a bloodied shirt.
Mousinho said: “Ogilvie took a blow and we wanted to make sure that he was okay, while it’s a nice option to have Sparkesy come on.
“I think that Shaughs has cut his nose and it just kept bleeding, but he kept battling on and we know what a warrior he is.”
Mousinho also provided an update on Tom Lowery, who recently saw a specialist over his hamstring issue.
He said: “It’s not what we were fearing and we’re looking at around six weeks from the time of injury – we’ve already had a couple of those.
“We’ll be cautious with Tom when he returns to training and it’s never nice to have players out, but it was fairly good news overall.”