NEW YORK — The Yankees’ COVID-19-related delay to the second half lasted just one day.

The Bronx Bombers began their crucial series against the Boston Red Sox as scheduled Friday night, after the Thursday game was postponed due to positive COVID-19 tests within the Yankees’ organization.

MLB said the postponement was to allow for more testing and contact tracing.

Pitchers Jonathan Loaisiga, Nestor Cortes and Wandy Peralta tested positive for COVID-19 despite being vaccinated, according to Yankees General Manager Brian Cashman, but all were doing well.

Loaisiga went on the COVID-19 injured list Saturday, when the Yankees were in Houston, and he did not travel home with the team Sunday. Cortes and Peralta went on the COVID-19 IL on Thursday.

Cashman said Thursday all three were fully vaccinated, as were most of the players on the team. Among the three, two received the Johnson & Johnson vaccine, and the other was either Pfizer or Moderna, according to Cashman.

After additional testing the Yankees early Friday evening placed All-Star outfielder Aaron Judge, catcher Kyle Higashioka, and third baseman Gio Urshela on the COVID-19 IL. It’s not confirmed if those players were fully vaccinated.

New York was among the first major league teams to reach the 85% vaccination threshold to lessen coronavirus protocols such as dropping mask use in dugouts and bullpens.

The postponed game will be made up as part of a split doubleheader at Yankee Stadium on August 17, MLB said.

The Yankees began the second half eight games back of the Red Sox in the American League East and 4.5 games back of an AL wild-card berth.