Pompey will look to hold on to top spot in the League One table when Gillingham visit Fratton Park this weekend.
A midweek victory at Coventry stretched their unbeaten run to 11 games – a record that stretches back 57 years.
Back in the 1961/62 campaign, George Smith’s troops started the season by going 12 matches without suffering defeat – going on to secure the third tier title.
That record will be equalled if the current crop of players can earn at least a draw against the struggling Gills.
Their opponents are sitting in the drop zone, with just eight points collected from their first 10 fixtures.
But they do have a game in hand on all the sides around them in the table, with a scheduled midweek clash with Blackpool postponed so the Kent outfit could work on improving their pitch.
On the road, Steve Lovell’s outfit have beaten Accrington, drawn with Shrewsbury, and lost to Walsall, Barnsley and Rochdale.
There was also a 4-0 reverse at Fratton Park in the group stages of the Checkatrade Trophy a few weeks ago.
But Gillingham won last season’s corresponding meeting, with Jamal Lowe’s opener wiped out by three second half goals for the visitors.
Andre Green (knee) is the only injured Pompey player, although Dion Donohue is not quite ready to return after recovering from a hamstring problem.
Former Blues loanee Conor Wilkinson will be hoping to feature after netting twice for the reserves earlier in the week.
But the visitors still have doubts over Billy Bingham (ankle), Regan Charles-Cook (ankle), Elliott List (back) and Connor Ogilvie (ankle).
HEAD TO HEAD
Pompey: 19 wins
Gillingham: 7 wins
At Fratton Park
Pompey: 12 wins
Gillingham: 1 win
Seats are limited, so click here to secure your place or a pay a visit to the Anson Road ticket office.
Subject to availability, they will be available from both ticket offices (Anson Road and Frogmore Road) from 9am on Saturday.
Overseas subscribers and match pass holders can watch the action – now with on-screen graphics – and commentary will begin from around 10 minutes before kick-off.
ALSO IN LEAGUE ONE
Blackpool v Rochdale
Bradford v Sunderland
Bristol Rovers v Walsall
Charlton v Coventry
Doncaster v Fleetwood
Luton v Scunthorpe
Peterborough v Barnsley
Plymouth v AFC Wimbledon
Shrewsbury v Accrington
Southend v Oxford
Wycombe v Burton