The 2020 NBL season (officially known as the 2020 NBL Showdown) was the 39th season of the National Basketball League. The regular season was set to commence on Thursday 9 April and end on Sunday 12 July, with the finals then taking place between 16–24 July. However, following the coronavirus outbreak in early to mid March 2020, the season was suspended indefinitely. After two months of deliberation and in the wake of easing coronavirus restrictions, the league announced a revised competition format for 2020 beginning on Tuesday 23 June and ending with the grand final on Saturday 1 August.