Left-hander Kyle Harrison made his long-awaited Red Sox debut Wednesday afternoon. He did so out of the Boston bullpen, opening the door for Harrison to become an important reliever for the Red Sox the rest of the way.

Harrison was the big piece acquired by Boston in the team's surprise blockbuster trade that sent Rafael Devers to the San Francisco Giants in mid-June. The southpaw spent the last three months in the minors, but came out of the bullpen in the sixth inning Wednesday and tossed three scoreless innings against the Athletics in Sacramento.

Harrison gave the Red Sox a chance to win with his relief work, though Boston lost 5-4 on an uncharacteristic off-day from closer Aroldis Chapman . The young lefty displayed some solid command throughout the outing, as he threw 35 of his

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