Match ends, Northampton Town 0, Portsmouth 1.
Danny East's early goal was enough to earn victory for Portsmouth and ensure Northampton remain in the relegation zone with two games of the season left.
East struck after minutes, volleying over keeper Matt Duke from 10 yards.
Sonny Bradley wasted a good headed chance to make it 2-0 while Emile Sinclair and Darren Carter missed decent chances for the Cobblers.
The hosts dominated the second half but could not find a breakthrough and stay in the bottom two on goal difference.
Exeter are two points ahead after losing to bottom-of-the-table side Torquay United.
Portsmouth caretaker manager Andy Awford told BBC Radio Solent:
"The run we've had has been absolutely fantastic and the players deserve massive credit for what they've managed to achieve in the last five games.
"It just shows you how tight this league is. When we took over we were looking over our shoulders worried about the trap door, but thankfully that's gone away now and we can hopefully start to look upwards.
"I didn't pick the team to make it easy for anybody and I felt that the right thing to do today was freshen it up and luckily it worked today.
"I've got plans in my head in case I am manager here next season but there's no point going any further until I know what the situation is."
- 2McSweeneySubstituted forMorrisat 45'minutes
- 25HorwoodBooked at 72mins
- 29RobertsonBooked at 87mins
- 34RavenhillSubstituted forLangmeadat 81'minutes
- 7SinclairSubstituted forToneyat 45'minutesBooked at 56mins
- 40CarsonBooked at 72mins
- 17ShoreyBooked at 90mins
- 4EastSubstituted forHolmesat 78'minutes
- 23AgyemangSubstituted forDrennanat 65'minutes
- 32JervisSubstituted forHollandsat 54'minutes
- Darren Deadman
- Shots on Target
Second Half ends, Northampton Town 0, Portsmouth 1.
Corner, Northampton Town. Conceded by Trevor Carson.
Attempt saved. Kelvin Langmead (Northampton Town) right footed shot from the centre of the box is saved in the centre of the goal.
Corner, Northampton Town. Conceded by Daniel Alfei.
Nicky Shorey (Portsmouth) is shown the yellow card.
Foul by Chris Hackett (Northampton Town).
Ricky Holmes (Portsmouth) wins a free kick on the left wing.
Attempt saved. Kelvin Langmead (Northampton Town) header from the centre of the box is saved in the centre of the goal.
Ben Tozer (Northampton Town) wins a free kick on the left wing.
Foul by Michael Drennan (Portsmouth).
Gregor Robertson (Northampton Town) is shown the yellow card.
Foul by Gregor Robertson (Northampton Town).
Michael Drennan (Portsmouth) wins a free kick on the right wing.
Attempt saved. Jed Wallace (Portsmouth) right footed shot from the centre of the box is saved in the centre of the goal.
Corner, Northampton Town. Conceded by Nicky Shorey.
Substitution, Northampton Town. Kelvin Langmead replaces Richard Ravenhill.
Foul by John Marquis (Northampton Town).
Sonny Bradley (Portsmouth) wins a free kick in the attacking half.
Richard Ravenhill (Northampton Town) wins a free kick in the attacking half.