There are only two games of the season remaining and the top three are now confirmed. However, who finishes where hasn't been confirmed yet with six points still to play for.
Here are the current standings:
1st: Doncaster Rovers - 85pts (+ 34) - PROMOTED
Form: LWWDLL (7 points from the last 18)
Summary: Doncaster only need three points maximum to ensure Pompey can't catch them but anything less can see Pompey overtake them. Exeter have the second-best away record in the division so may get something at the Keepmoat but relying on hapless Hartlepool to get something against them on the final day is probably asking too much.
2nd: Plymouth Argyle - 83pts (+24) - PROMOTED
Form: WLWDWD (11 points from the last 18)
Summary: Plymouth's draw at Colchester means the gap between them and Pompey is now just two points. Crewe have a good record against the higher teams in the division so could get a result on Saturday whilst Grimsby isn't the easiest place to go to, either.
3rd: Portsmouth - 81pts (+33) - PROMOTED
Form: WWWDWW (16 points from the last 18)
Summary: Pompey face a difficult game at play-off chasing Mansfield on Saturday but are the form team in the division and will fancy themselves to win. Who knows? Paul Cook's men could be heading into a very winnable match at home to struggling Cheltenham with the possibility of being crowned champions.
How League One is shaping up next season
Pompey may be going up with Doncaster and Plymouth but who joins them is anyone's guess.
The race for the play-offs is extremely tight with anyone down to Grimsby in 14th place still in with a shout of finishing in the top seven with just six points left to play for.
Rotherham's New York Stadium will be a new ground for Pompey fans to visit after the Millers were relegated from the Championship following an extremely poor season. Wigan will join them whilst the final place is realistically between Blackburn, Nottingham Forest and Harry Redknapp's Brmingham.
In terms of who Pompey won't be playing next season, Sheffield United won League One and Bolton are in prime position to be promoted with just one game left to play.
Portsmouth will be passing Paul Cook's former club Chesterfield on the way up as they have been relegated along with Coventry and Swindon. Port Vale will join them if they lose their game in hand at Walsall on Tuesday.