There was an electric atmosphere inside Fratton Park for Tuesday night’s south coast derby.
Pompey could certainly do with something similar on Saturday, when they host bottom-of-the-table Bolton in League One.
But Kenny Jackett knows that his side have to earn that level of backing with better displays on the pitch.
And with just one victory from their opening seven league fixtures, he wants to see more from the players.
The Blues boss said: “We’ll only generate that kind of atmosphere with our performance, which is how it should be. We have to take the lead on that.
“But we do know that if we do that, then we have a fantastic, passionate crowd that will get right behind the team and drive them on.
"A fair assessment of our start is needed and we’re not happy with our number of wins or our league position."
“We want to replicate a lot of the traits that were on display on Tuesday night because we created a plenty of chances at the start of both halves.
“But I do think a fair assessment of our start is needed and we’re not happy with our number of wins or our league position.
“It didn’t really work in a 50-50 game at Wycombe in terms of our performance last Saturday. It improved on Tuesday and now it needs to improve again.
“Teamwork is important and you don’t need many weak links to struggle – you’re often only as good as your weakest player.”
Bolton began the season on -12 points after entering administration, but things are looking up following the completion of a takeover last month.
Jackett said: “Pompey have recent experience of those kind of troubles and you wouldn’t wish it on anybody.
“The people who work at the club and the supporters have been through tough times and now they’ll be looking to build back up.
“They have a new management team and several new players, and have had a couple of decent results lately.
“We will obviously give them the respect they deserve, but we want to focus on our performance in what is a big game for us.”