FILE - In this March 25, 2020, fikle photo, medical personnel from BayCare test people for the coronavirus in the parking lot outside Raymond James Stadium in Tampa, Fla. Nobody can say with precise certainty how many coronavirus tests that the NBA, NHL and Major League Baseball would need before those leagues can resume playing games. (AP Photo/Chris O'Meara, File)

FILE - From left are file photos showing Major League Baseball commissioner Rob Manfred, NFL commissioner Roger Goodell and NBA commissioner Adam Silver. Nobody can say with precise certainty how many coronavirus tests that the NBA, NHL and Major League Baseball would need before those leagues can resume playing games. (AP Photo/File)

FILE - In this March 17, 2020, a medical worker tests a person for the coronavirus at a drive-thru facility in San Antonio. Nobody can say with precise certainty how many coronavirus tests that the NBA, NHL and Major League Baseball would need before those leagues can resume playing games. (AP Photo/Eric Gay, File)

FILE - In this March 30, 2020, file photo, cars line up at a drive-thru coronavirus testing site in front of Hard Rock Stadium in Miami Gardens, Fla. Nobody can say with precise certainty how many coronavirus tests that the NBA, NHL and Major League Baseball would need before those leagues can resume playing games. (AP Photo/Wilfredo Lee, File)