Rob Manfred believes Major League Baseball's health protocols are working despite an outbreak of COVID-19 among the Miami Marlins.

"We built protocols anticipating that we would have positive tests at some point during the season," Manfred said. "The protocols were built to allow us to play through those positives. We believe the protocols are adequate to keep our players safe."

The Marlins had at least 11 players and two coaches test positive over the past few days, forcing the postponement of both Monday's and Tuesday's games.

"I don't put this in the nightmare category," Manfred said. "It's not a positive thing, but I don't see it as a nightmare. ... That's why we have the expanded rosters. That's why we have the pool of additional players."