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.
TEAM NEWS
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).
VIEW FROM THE DRESSING ROOM
Read the thoughts of Kenny Jackett and Christian Burgess or register for a free iFollow account to watch the below videos.
HEAD TO HEAD
Overall
Pompey: 3 wins
Wycombe: 3 wins
4 draws
At Fratton Park
Pompey: 2 wins
Wycombe: 2 wins
2 draws
TICKETS
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.
MATCH COVERAGE
Domestic iFollow subscribers can listen to live commentary from Andy Moon and Guy Whittingham by signing into their account and visiting the match centre from 2pm 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.
Click here for more information about using iFollow on a matchday and click here for information on downloading the app, so you can access content on your mobile device.
We will have updates throughout the game on Twitter and the match centre. You can also see behind-the-scenes content on our Instagram story and Snapchat account.
There will be post-match reaction on the website, iFollow and our official YouTube channel, with highlights to follow on Sunday.
Local listeners can hear commentary by tuning in to either Express FM or BBC Radio Solent.
BETTING
Pompey are the 7/10 favourites with Sky Bet to secure all three points, while the visitors can be backed at 4/1.
Click here to read our full betting guide and visit www.skybet.com/pompey to earn money for the club when you place a bet. Please gamble responsibly.
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