In the meantime, we've taken a look at how the career win percentage of every League One boss ranks ahead of the new campaign. This is how Pompey boss Kenny Jackett shapes up against all 23 of his third-tier managerial adversaries for the 2020/21 season.
21. Doncaster Rovers - Darren Moore
Career win percentage: 44.4%. Number of games at current club: 42. Photo: George Wood
22. Portsmouth - Kenny Jackett
Career win percentage: 44.6%. Number of games at current club: 167. Photo: Warren Little
23. Plymouth Argyle - Ryan Lowe
Career win percentage: 45.2%. Number of games at current club: 45. Photo: Charlotte Tattersall
24. Peterborough United - Darren Ferguson
Career win percentage: 47.5%. Number of games at current club: 428. Photo: Luke Walker