Pompey will try to protect League One’s only unbeaten record when Wycombe visit the south coast on Saturday.
In fact, there are only a total of seven clubs in the top four divisions of English football – including Chelsea, Liverpool, Manchester City, Leeds, Forest Green and MK Dons – who have yet to taste defeat.
That fine start to the season means that it is the Blues who are now sitting proudly at the third tier summit.
Their next opponents are down in 19th, having only secured one league victory from the opening eight fixtures.
They have drawn four of those, however, and also enjoyed success in both the Carabao Cup and Checkatrade Trophy.
Gareth Ainsworth led the Chairboys to automatic promotion last term, bringing to an end their six-season stay in the basement.
Pompey triumphed 4-2 when the sides last met in a league encounter at Fratton Park, en route to securing the title.
But it was Wanderers who had the edge during that 2016/17 campaign, with victory in the return fixture and also in an FA Cup clash.
Anton Walkes and Jack Whatmough are both available again following spells on the sideline, while Ronan Curtis is fine after limping off at the end of last Saturday’s match at Peterborough.
But Andre Green is unavailable after undergoing a minor operation on his knee this week to remove a cyst.
The visitors will be without defenders Adam El-Abd (thigh) and Anthony Stewart (hamstring), as well as forward Nathan Tyson (hamstring).
HEAD TO HEAD
Pompey: 3 wins
Wycombe: 3 wins
At Fratton Park
Pompey: 2 wins
Wycombe: 2 wins
Seats are still available, although spaces are extremely limited in all areas except the Milton End. Click here to buy online or visit the ticket office.
Subject to availability, they will be available from both tickets 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
Accrington v AFC Wimbledon
Barnsley v Burton
Blackpool v Luton
Bristol Rovers v Coventry
Charlton v Plymouth
Doncaster v Bradford
Gillingham v Peterborough
Oxford v Walsall
Scunthorpe v Shrewsbury
Southend v Fleetwood
Sunderland v Rochdale
LAST FRATTON LEAGUE MEETING