Will testing be frequent enough? Will it be reliable enough? And will the proposed measures for handling a positive test be enough to prevent the coronavirus from spreading throughout the sport?
These are the biggest questions facing Major League Baseball, even after it sent an incredibly detailed list of health-and-safety proposals to the players' union last week.
The rate of testing in the United States is increasing. But it still is not where health experts say it needs to be. And as the league pitches a plan to start a shortened 2020 season in a little over a month, it is suggesting frequent testing but not daily testing, which could put players and all those necessary to stage a season at higher risk of infection.