Well, I think they will replace the players with the other, and they will quarantine that player in isolate room like the other infected people out there.
But before the game starts, maybe the players will be tested their health before they play so the player really health and free from Covid-19.
I think they will use some protocols for the event, and if somehow, they found one or more players or teams who infected of Covid-19, they use that protocol and use more protection for the other players.
The sports management needs to work seriously to handle this Covid-19, and they will make sure that people who work with them are clean and healthy.