NBL owner and executive chairman Larry Kestelman addressed the media on Thursday alongside league commissioner Jeremy Loeliger to award the Wildcats a record 10th title.
Perth led the five-game series 2-1 over the Sydney Kings before the growing presence of the coronavirus in Australia left Will Weaver's men unwilling to travel.
Game four was scheduled to take place this Friday night on SBS VICELAND, but the decision to cancel the rest of the series on Tuesday left the league in a rather difficult predicament.
"We have taken extensive advice on this matter from the NBL Board of Directors, members of our Advisory Board, FIBA and our external legal advisers K&L Gates and I thank all of them for the benefit of their insight and perspective," Loeliger said.
"Having considered all of that advice, we have concluded that there is only one outcome that is most appropriate in the circumstances of the League having made the decision to cancel games 4 and 5 of the Finals Series.
"We feel that the rules set out in the NBL Operations Manual are clear in this regard.
"In this instance, games 4 and 5 were cancelled by the League due to unforeseen circumstances pursuant to Rule 34 of the NBL Operations Manual.
"Consequently, the Champions of the Hungry Jack’s 2019-20 NBL Season are the Perth Wildcats.
"We can now also announce the winner of the Larry Sengstock Medal for our Grand Final MVP which is determined in accordance with the votes of our expert judging panel based on their votes for Games 1 to 3 of the Finals Series.
"The Larry Sengstock Medal for the Grand Final MVP is awarded to Bryce Cotton.
"I’d like to offer my congratulations to both our Champions, the Perth Wildcats, and our runners up the Sydney Kings and our Finals MVP Bryce Cotton."
The announcement comes despite the Kings finishing the regular season in first place and is now the Wildcats' second title in succession.