What does history tells us about Pompey's League One promotion chances next season?
We've gone back in time to discover every defeated League One play-off semi-finalists and looked at how they've fared the following season. In history in favour or against the Blues? Click and scroll through the pages to find out:
Brentford narrowly missed out on automatic promotion before tasting further play-off semi-final defeat at the hands of Swansea. Tranmere, however, survived relegation by four points.
Two consecutive years of play-off heartbreak took its toll on Brentford as they were relegated from League One. Huddersfield dropped down to 15th.
Sign up to our Portsmouth FC newsletter
The i newsletter cut through the noise
In the following season, Oldham fell nine points short of a play-off spot in 8th whereas Yeovil suffered an opposite effect, finishing five points off the relegation places.
Southend, despite their best efforts, fell five points short in the race for the play-offs. At the other end of the table, Carlisle escaped the drop by ONE point.
Leeds bounced back in the best possible fashion, piping Millwall to an automatic promotion place. It proved to be an indifferent season for MK Dons, though, who ended the term in 12th.
One year later, Huddersfield reached the play-off final, only to be heartbroken by Peterborough. Charlton had to settle for 13th place.
MK Dons, for the second season running, confirmed a play-off place but would lose to Huddersfield in the semi-finals. Bournemouth fell away from the promotion picture in 11th.
To MK Dons credit, they pushed hard for the play-offs but missed out by four points. Stevenage slipped right the way down to 18th.
Both Swindon and Sheffield United went on to challenge the play-off picture but ultimately fell short in 8th and 7th, respectively.
Peterborough, in 9th, fell short of the top six by six points where Preston claimed 3rd spot and went up via the play-offs with a 4-0 win over Swindon Town in the final.
Neither side returned stronger with Chesterfield dropping into the bottom-half of the table while Sheffield United could only achieve an 11th place finish.
Walsall fell way off the pace - competing in mid-table - while Bradford reached the play-off, though lost to Millwall 1-0 at Wembley.
The following season ended in another play-off semi-final defeat for Scunthorpe, this time to Rotherham, while Fleetwood plummeted to 14th.
Charlton, of course, made the play-offs and are in semi-final action Doncaster tonight with a 2-1 advantage. Things could not have gotten any worse for Scunthorpe, who were relegated.
Well only Leeds United and Preston have went on to achieve promotion after losing their League One play-off semi final. But hey, it can be done, as proven