Reliever Nestor Cortes, Jr. was one of five Yankees to test positive for COVID-19, forcing postponement of Thursday night's Red Sox-Yankees game in New York. (AP file photo)

They’re won’t be saying “Play ball!” tonight in the Bronx.

Thursday night’s Boston Red Sox-New York Yankees game, the only game scheduled on the Major League docket, was postponed due to a COVID-19 issue with the Yankees.

The decision reportedly was made by Major League Baseball, and no makeup date was announced. It’s possible that the rest of the series, scheduled through Sunday, could be in jeopardy.

MLB issued the following statement: “Following COVID-19 tests within the New York Yankees organization, tonight’s game between the Yankees and the Boston Red Sox at Yankee Stadium has been postponed to allow for continued testing and contact tracing. Major League Baseball will continue to provide scheduling updates as available.”

The first sign of trouble was the Yankees cancelling batting practice, reportedly to undergo testing.

Yankees reliever Jonathan Loaisiga has already been on the COVID-19 list since Saturday. Earlier in the day the Yankees announced they had placed pitchers Nestor Cortes and Wandy Peralta also on the COVID list. Yankee GM Brian Cashman said late today that three other Yankee players tested positive under rapid testing and the team is waiting for those test results to be further confirmed by a lab.

This is the second time the Yankees have had an outbreak; eight members of the organization, including infielder Gleyber Torres and third base coach Phil Nevin, tested positive in May. Nevin missed a month of the season.

Cashman said most of the players on the team had been vaccinated, but not all.

While vaccinations do not prevent a person from contracting COVID, it prevents severe effects.

“As of right now, everybody’s OK,” he said.

Cashman said Major League Baseball had not yet decided whether to postpone Friday’s second scheduled game of the four-game series.

“We’re in a very fluid situation right now,” he said.

(Material from the Associated Press was also used in this report.)