It’s still going to be the physical separation, where you might have teams playing essentially with no, or very physically separated, spectators. You could have a lottery. Instead of allowing 5,000 people into a high school or into a college gym if it holds 20,000 or 30,000, you do a considerably lower number if they’re physically separated. You wouldn’t do that now. You have to do that when the infection rate gets so low that when somebody does come up with infection, you can stop it from turning into an outbreak.
Article source: https://www.nytimes.com/2020/04/28/sports/fauci-sports-reopening-pandemic.html