A look at Pompey's 2016/17 opponents
Colchester will be aiming to bounce back from the disappointment of suffering relegation from the third tier last season.
They have not faced Pompey since both sides were in League One during the 2012/13 campaign, with the Essex side collecting four points from the two meetings that term.
Manager: John McGreal
Ground: Weston Homes Community Stadium
Nickname: The Us
Distance from Fratton Park: 144.1 miles
Estimated drive time: 2 hours 30 minutes
2015/16 position: 23rd in League One
2016/17 title odds: 14/1
Pompey v Colchester last season: N/A
Crawley may have finished only three places above the drop zone last season, but they were a comfortable 13 points clear of relegation.
Boss Dermot Drummy – who replaced Mark Yates towards the end of the campaign – has already brought in six new players this summer.
Manager: Dermot Drummy
Ground: Broadfield Stadium
Nickname: Red Devils
Distance from Fratton Park: 57.7 miles
Estimated drive time: 1 hour 25 minutes
2015/16 position: 20th in League Two
2016/17 title odds: 66/1
Pompey v Crawley last season: D 0-0 (A), W 3-0 (H)
Crewe suffered a nightmare 2015/16 season, finishing rock bottom of League One and collecting just one win from their final 17 games.
Relegation was confirmed with five fixtures still to play, ending their four-year stint in the third tier of English football.
Manager: Steve Davis
Ground: Alexandra Stadium
Distance from Fratton Park: 213.7 miles
Estimated drive time: 3 hours 30 minutes
2015/16 position: 24th in League One
2016/17 title odds: 18/1
Pompey v Crewe last season: N/A
Rovers were condemned to League Two after drawing with Burton on the final day of last season, although even victory would not have been enough to save them.
Pompey relegated Doncaster from the Championship in April 2012 when they won 4-3 at the Keepmoat Stadium.
Manager: Darren Ferguson
Ground: Keepmoat Stadium
Distance from Fratton Park: 237.6 miles
Estimated drive time: 3 hours 53 minutes
2015/16 position: 21st in League One
2016/17 title odds: 8/1
Pompey v Doncaster last season: N/A
Pompey did not enjoy their meetings with Exeter last season, losing there in the Johnstone’s Paint Trophy before suffering a first Fratton league defeat.
It looked like the Blues had put those results behind them when they travelled to Devon in March, only for a last-gasp leveller to deny them victory.
Manager: Paul Tisdale
Ground: St James Park
Distance from Fratton Park: 130.4 miles
Estimated drive time: 2 hours 50 minutes
2015/16 position: 14th in League Two
2016/17 title odds: 25/1
Pompey v Exeter last season: L 1-2 (H), D 1-1 (A)
Grimsby secured the second and final National League promotion spot last season after beating Forest Green at Wembley in the play-off final.
They returned to the national stadium seven days later to try to lift the FA Trophy, but it was Halifax who came out on top.
Manager: Paul Hurst
Ground: Blundell Park
Distance from Fratton Park: 260 miles
Estimated drive time: 4 hours 37 minutes
2015/16 position: 4th in National League
2016/17 title odds: 20/1
Pompey v Grimsby last season: N/A