With Major League Baseball scheduled to start play July 23 or 24, the NBA scheduled to resume play outside Orlando, Fla., July 30 and the NHL yet to determine its restart date, The Basketball Tournament will become a test case for the safety of spectator-free contact sports played in quarantined conditions, though its single-elimination format makes the comparison to leagues resuming regular seasons imprecise. Losing teams will depart immediately, without returning to the hotel. The maximum stay in Columbus is 14 days. “A single-elimination tournament eliminates so many ‘touch points,’ ” Jon Mugar, the tournament’s founder, said.