NEW YORK (CBSNewYork) — Strict guidelines are in place for the upcoming U.S. Open tennis tournament.

So far, one person, who is not a player, has tested positive for COVID-19.

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The grand slam tennis event is scheduled to start Aug. 31 without fans at the Billie Jean Tennis Center in Queens.

A player must be in the so-called “bubble,” a centralized environment, four days before their first match.

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The U.S. Open will require masks and social distancing to lower the risk.

“The athletes have everything they need. They have comfortable housing, medical testing, transportation, practice facilities, trainers, physios, a variety of food service,” said U.S. Open tournament director Stacey Allaster.

If a player does test positive, they would be forced to withdraw from the U.S. Open tournament.

The United States Tennis Association says so far 1,400 COVID-19 tests have been administered.

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