Inside The Red Sox

Red Sox Calling Up Kyle Harrison, Top Piece From Rafael Devers Trade: Report

Boston is pulling out all the stops in September
May 24, 2025; Washington, District of Columbia, USA; San Francisco Giants pitcher Kyle Harrison (45) throws during the first inning against the Washington Nationals at Nationals Park. Mandatory Credit: Daniel Kucin Jr.-Imagn Images
May 24, 2025; Washington, District of Columbia, USA; San Francisco Giants pitcher Kyle Harrison (45) throws during the first inning against the Washington Nationals at Nationals Park. Mandatory Credit: Daniel Kucin Jr.-Imagn Images | Daniel Kucin Jr.-Imagn Images

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With the September stretch run beginning to unravel, the Boston Red Sox are pulling no punches. Every game is finally being treated like the biggest of the season.

Boston had an opening in its rotation after dropping Walker Buehler, who was ultimately released and signed by the Philadelphia Phillies. It appears top prospect Payton Tolle will assume the role of No. 5 starter for now, but the Red Sox will also need another arm to cover starts when Tolle is unavailable after only four days' rest.

With their latest roster decision, it appears they have the final piece of the puzzle.

Kyle Harrison reportedly being recalled from Triple-A Worcester

The Red Sox are calling up left-handed pitcher Kyle Harrison, according to Tommy Cassell of the Worcester Telegram and Gazette. With no starter announced for Wednesday's game against hte Cleveland Guardians, it appears likely that Harrison will get the nod for that series finale.

"Kyle Harrison is leaving Polar Park with his bags packed. He’s headed up to Boston," Cassell wrote.

The Red Sox have yet to announce a roster move, which will require optioning someone to Triple-A. Harrison is already on the team's 40-man roster, as he was on the Giants' major league team at the time of the trade.

Harrison, 23, was the headlining piece of the Rafael Devers trade, which saw the Red Sox acquire four players from the San Francisco Giants for the three-time All-Star designated hitter. Once the top pitching prospect in the Giants organization, he's made 35 starts and pitched 182 2/3 innings already in the major leagues (4.48 ERA).

Though he wasn't always sharp, Harrison put up a 3.65 ERA in 11 starts for Triple-A Worcester after the trade. In 49 1/3 innings, he struck out 48 batters. He improved dramatically in August, pitching to a 2.35 ERA in five starts.

Because of the way the Red Sox's schedule works out, they can pitch Harrison on Wednesday, then again on Sept. 10 against the Athletics, while having Tolle pitch the next game and get a full week's rest on both occasions. But we'll await manager Alex Cora's final say on what the two lefties' roles will be.

UPDATE: As of Wednesday, the Red Sox now have no plans to call up Harrison, according to Alex Speier of the Boston Globe. The Red Sox will use Brennan Bernardino as an opener on Wednesday. According to MassLive's Katie Morrison-O'Day, Harrison recently sustained an ankle injury and may have been traveling to Boston to receive an MRI.

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Jackson Roberts
JACKSON ROBERTS

Jackson Roberts is a former Division III All-Region DH who now writes and talks about sports for a living. A Bay Area native and a graduate of Swarthmore College and the Newhouse School at Syracuse University, Jackson makes his home in North Jersey. He grew up rooting for the Red Sox, Patriots, and Warriors, and he recently added the Devils to his sports fandom mosaic. For all business/marketing inquiries regarding Boston Red Sox On SI, please reach out to Scott Neville: scott@wtfsports.org