In a surprising move, the Red Sox let go of one of their pitchers ahead of Friday’s game against the Pirates.

The club announced that it released Walker Buehler to make room for Payton Tolle , who is set to make his MLB debut as Boston’s starting pitcher Friday.

Buehler, 31, started 22 games for the Red Sox this season. He was recently moved out of Boston’s starting rotation and into its bullpen due to his pitching struggles. Buehler pitched in relief on Aug. 24 versus the Yankees, his final appearance with the team.

The right-hander experienced more lows than highs during his time with the Red Sox. Buehler owns a 5.45 ERA and 1.56 WHIP through 112 ⅓ innings pitched this year.

Walks have been his biggest problem, allowing an average of 4.4 per nine innings (55 total). Buehler is al

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