Roy Hodgson hailed super-sub Erik Nevland as a 'hero' for scoring twice to kill off Portsmouth and give Fulham the three points.
The Cottagers were looking to bounce back from their midweek defeat to Sunderland and were on course in the 14th minute when Andy Johnson slotted home.
But after a scare from a Younes Kaboul header which cannoned off the crossbar, substitute Nevland dispatched his only two chances of the game to sink Pompey's attempted revival.
On his inspired substitute, the Fulham boss said: "Every time he's called upon he's answered and today he's the hero of the team.
"I'm delighted that someone as unassuming and as professional as he is, is getting his share of the glory.
"He came last year and played a major part in our staying up. He's played a part for us this year, he's been very patient waiting for his chances."
Despite a consolation goal from Portsmouth striker David Nugent six minutes from time, Hodgson was pleased his side managed to bounce back from the midweek Sunderland defeat.
He added: "If you lose a game from time to time you've got to make sure you win one and this was a big game for both teams. I'm just delighted that we have got the 29 points that we have so far."
New loan signing from Derby County, Giles Barnes, was unveiled to the Fulham faithful before the game and Hodgson confirmed two more players are on the verge of joining the Cottagers.
"We are certainly looking to at least get one, possibly two players in on loan - we're in negotiations with those players and their clubs and I haven't yet given up hope that come Monday, 5pm, two players will be with us," Hodgson added.
However the former Blackburn boss did deny approaches for Leeds United playmaker Fabian Delph and Tottenham's Tom Huddlestone.