The Boston Red Sox are moving one of their key free agent signings, former All-Star right-hander Walker Buehler, from the rotation to the bullpen.

MassLive had reported that the Red Sox were weighing what to do with the struggling pitcher, and manager Alex Cora confirmed the decision Friday before Boston played the second of a four-game set against the host New York Yankees.

“We’ll figure out how he goes. Maybe one inning, multiple innings, whatever it is, we don’t know yet,” Cora said.

Buehler won’t be available Friday as he made his last start Tuesday against the Baltimore Orioles. He used 75 pitches to get through four innings of a no-decision as Boston eventually lost to the O’s in extra innings.

An All-Star in 2019 and 2021 with the Los Angeles Dodgers, Buehler signed a one-year d

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