The NBA and the National Basketball Players Association on Friday said 16 players tested positive for the coronavirus in the first wave of mandatory tests done in preparation for the restart of the season.
Those 16 players were part of a pool of 302 tested on Tuesday -- a 5.3% rate of positive tests leaguewide.
Commissioner Adam Silver said the numbers were roughly as expected and that none of the 16 were seriously ill.
"One thing we're learning with this virus is, so much is unpredictable," Silver said during Friday's conference call with National Basketball Players Association executive director Michele Roberts and NBPA president Chris Paul. "We're not saying full steam ahead no matter what happens. We all talk daily, and we're gonna see how this continues to play out. But we feel very comfortable right now with where we are."
Any player who tested positive will remain in self-isolation until he satisfies public health protocols for discontinuing isolation and has been cleared by a physician.
The player names were not disclosed; some players, such as Malcolm Brogdon of Indiana and Sacramento teammates Jabari Parker and Alex Len, have publicly acknowledged they recently tested positive.
The NBA season is scheduled to resume on July 30 with 22 teams participating in Orlando, Florida.
Both Silver and NBPA executive director Michele Roberts said they were "relieved" that the number wasn't higher and that both sides expected positive tests during this period.
"Well, I think one would have been concerning, but God forgive me, I'm somewhat relieved that the number was not higher," Roberts said. "I'm also relieved that we had the foresight to identify the players that would be testing positive now, because our goal, of course, is to make sure that when guys do report to campus, that they'd be reporting having been tested negative.
"I've been holding my breath for the last few weeks -- and again, maybe I should be less enthusiastic or optimistic. If nothing else, it's told me that the great majority of our players have been doing exactly what they should have been doing, which is keeping safe. Again, one is too many, but 150 would have been devastating."
The league did not announce results of testing on staffers and other members of team travel parties, all of whom are also part of the mandatory testing program.
On Tuesday, teams were required to begin testing players participating in voluntary workouts in their home markets every other day. Mandatory workouts begin July 1, and teams participating in the restart can begin to arrive in Florida on July 7. Training camps will run from July 9 to 29 with three scrimmages per team.
On Thursday, the NBA shared with its players the security plan to help enforce health and safety protocols and to secure its campus at the ESPN Wide World of Sports Complex for the resumption of the season, league sources told ESPN.
ESPN's Tim Bontemps and The Associated Press contributed to this report.