The MLS conducted its return-to-play tournament and regular season amid the ongoing coronavirus pandemic, and as a result, "almost 20 percent" of the league's athletes tested positive, according to Bob Foose, the executive director of the league's players association (h/t ESPN's Jeff Carlisle).
Per Carlisle, that equates to about 150 players testing positive throughout the season.
"Almost 20 percent of the players in the league, at one point or another, were infected with the virus, which meant that those who became infected and those who didn't become infected, became dangerous and dangerous to their partners, their family and their friends just by virtue of doing their jobs," Foose said.