On 2 October 2020, the SPFL confirmed that the Scottish Challenge Cup had been cancelled for the upcoming season.[2] Partick Thistle began their season on 7 October in the League Cup group stage with the League One season beginning on 17 October.
On 29 January 2021, the suspension was extended until at least 14 February.[4] In March 2021, the Scottish Government gave permission for the league to resume.
On 16 March, clubs from League 1 and 2 voted to implement for a reduced 22-game season with a league split after 18 games.[5]
On 29 April, Thistle were declared champions of League One and secured promotion to the Scottish Championship following their 5-0 victory over promotion rivals Falkirk.[6]