The Toronto Raptors' issues with the coronavirus have worsened, prompting the NBA to call off their game scheduled for Sunday night against the Chicago Bulls.

The league said the Raptors are dealing with positive test results, without disclosing how many, and that combined with ongoing contact-tracing issues meant they would not have the league-required eight players available to play.

Toronto played Friday without head coach Nick Nurse, several other assistants and staffers and starting forward Pascal Siakam because of virus-related issues. Assistant coach Sergio Scariolo coached the team to a win over Houston and had been in line to coach again Sunday.

The Raptors-Bulls game is the 30th to be postponed so far this season because of COVID-19 testing or contact tracing.

It was the first postponement this season for the Raptors, who are playing their home games in Tampa, Florida, because of coronavirus restrictions in Canada. Chicago has now had four of its games pushed back, all because its opponent for each of those contests was going through a virus-related problem.

The only teams that have not had a game postponed by virus issues so far this season are Brooklyn, the Los Angeles Clippers and the Los Angeles Lakers.

All NBA players and coaches are tested daily.