Ipswich and Pompey currently have identical League One records ahead of Saturday’s clash at Portman Road (3pm kick-off).
Level on points, goal difference and goals scored, the Suffolk side are only placed above their next opponents in alphabetical order.
The Tractor Boys have, however, played one game more and were beaten at new league leaders Plymouth last weekend.
It means that Danny Cowley’s men are now the only third tier outfit who have yet to taste defeat so far this season.
That will be put to the test against Town, who are favourites among the bookmakers to secure promotion.
Both clubs are looking for an improvement on the previous campaign, when they finished outside the top six.
Ipswich have the better record in overall meetings between the sides, although it is Pompey who have the edge in East Anglia.
The corresponding contest last season finished goalless and the Blues have lost just one of their past eight visits to Portman Road.
TEAM NEWS
Joe Pigott is ineligible to feature against his parent club on Saturday, while Louis Thompson (leg) is still sidelined.
Pompey are hopeful that Michael Jacobs (groin), Tom Lowery (hamstring) and Joe Rafferty (stomach) will be fit enough to return.
Former Blues players Conor Chaplin and Marcus Harness will be hoping to appear for Ipswich, but Gassan Ahadme (foot) has been ruled out.
The hosts are expected to be missing Sone Aluko (knee), Cameron Burgess (face), Panutche Camara (groin) and Greg Leigh (leg).
VIEW FROM THE DRESSING ROOM
Read the thoughts of Danny Cowley and Clark Robertson ahead of the game.
HEAD TO HEAD
Overall
Pompey: 16 wins
Ipswich: 20 wins
13 draws
On the road
Pompey: 10 wins
Ipswich: 9 wins
6 draws
TICKETS
Pompey have sold their full of allocation of tickets for the match. Click here for more details.
Click here to read a guide that Ipswich have produced for visiting supporters and please be advised that a rail strike is taking place this weekend.
OFFICIALS
Referee: Charles Breakspear
Assistants: Damith Bandara and James Vallance
Fourth Official: Anthony Da Costa
MATCH COVERAGE
Domestic iFollow subscribers can listen to live commentary from Andrew Moon and Guy Whittingham by signing into their account and visiting the match centre from around 2pm on Saturday.
Overseas subscribers and match pass holders can watch all the action live, with accompanying commentary.
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.
There will be post-match reaction on the website and our official YouTube channel, with highlights to follow on Sunday.
Local listeners can hear commentary by tuning in to either BBC Radio Solent or Express FM.
BETTING
Ipswich are the 4/5 favourites with VBET to secure all three points, while Pompey can be backed at 10/3.
Click here to find a comprehensive list of odds for Saturday’s game. 18+. Please gamble responsibly.
We are committed to playing our part in ensuring our relationship with VBET is promoted in the right way to our supporters.
That is why VBET have partnered with BettorMind, to provide responsible gambling advice around key betting behaviours.
When it comes to betting, we advise all fans to make use of our dedicated responsible gambling site.
ALSO IN LEAGUE ONE
All games kick-off at 3pm
Accrington v Morecambe
Bolton v Lincoln
Burton v Forest Green
Cambridge v Derby
Charlton v Oxford
Cheltenham v Shrewsbury
Exeter v Bristol Rovers
Fleetwood v Barnsley
MK Dons v Peterborough
Port Vale v Sheffield Wednesday
Wycombe v Plymouth
MEMORABLE MEETING
key moments
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