Charter flights to ferry U.S. Open tennis players and limited entourages from Europe, South America and the Middle East to New York. Negative COVID-19 tests before traveling. Centralized housing. Daily temperature checks.

No spectators. Fewer on-court officials. No locker-room access on practice days.

All are among the scenarios being considered for the 2020 U.S. Open -- if it is held at all amid the coronavirus pandemic -- and described to The Associated Press by a high-ranking official at the Grand Slam tournament.

"All of this is still fluid," Stacey Allaster, the U.S. Tennis Association's...