FAT therefore decided that to fill the league with 16 teams, they would run a pre-season competition featuring the 4 relegated clubs from the Thailand Division 1 League 2008 season.

were one of these clubs, however, they were beaten by Nakhon Sawan in the semi-final 2–1, therefore relegated to Thai Division 2 League.

[3] The club has finished 1st place in the league of the Northern region and advanced to the national championship stage.

In addition, in the 2022–23 Thai FA Cup Phitsanulok was defeated 1–2 by Bangkok United in the fourth round, causing them to be eliminated[4] and in the 2022–23 Thai League Cup Phitsanulok was defeated 0–4 by Bangkok United in the second round, causing them to be eliminated too.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.