The Charlotte Hornets, who hosted the Spurs on Sunday in Charlotte, N.C., also are undergoing contact tracing and have postponed their next two games.
The NBA said the games were postponed because the teams wouldn't have the league-required eight players available to participate.
The NBA and players union last week said one player out of 470 players tested from Feb. 3 through Feb. 10 returned a positive result for COVID-19. The league also reported just one player positive out of 492 players tested from Jan. 20 through Jan. 27.
More than two dozen NBA games have been postponed so far this season due to positive COVID-19 tests, contact tracing and quarantines.