The unidentified players have undergone further testing and are currently in isolation.
Under the league's protocol, players must produce two consecutive negative test results more than 24 hours apart before they're cleared to play, according to The Athletic's Chantel Jennings.
"The Storm organization fully supports the decision to postpone the game," the club said in a statement. "The health and safety of the WNBA players, team staffs, and all those involved in the production of this season remains our top priority."
There hasn't been a positive COVID-19 test since teams arrived at the WNBA bubble at the IMG Academy in July.
The league will reschedule Game 1.