Title-winning NBA head coach Doc Rivers is "feeling good" despite entering the league's health and safety protocols on Thursday.

Dan Burke, who will step in as the Philadelphia 76ers acting coach in Rivers' absence, said the 60-year-old was in good health and spirits while isolating.

Rivers is one of seven NBA head coaches who has entered protocols, amid the rising COVID-19 surge around the league.

"He says he feels good. He's not the least bit worried," Burke told reporters about Rivers.

"If there's anybody who just takes things in stride and keeps it real and keeps it relative, it's Doc. That's the lead we've got to follow."

On Thursday, the 76ers are due to play the Eastern Conference-leading Brooklyn Nets who will be bolstered by the return of Kevin Durant after clearing protocols.

Rivers, who guided the Boston Celtics to the 2008 NBA title, has helped the 76ers to an 18-16 record this season.