Kyle Harrison joins Red Sox after blockbuster Rafael Devers trade

In June 2025, the Boston Red Sox made headlines by trading Rafael Devers to the San Francisco Giants in a blockbuster deal. As part of this trade, left-handed pitcher Kyle Harrison, previously a third-round pick and top prospect for the Giants, was acquired. Harrison, who had been performing well in the minor leagues with a 3.75 ERA for the Worcester Red Sox, was called up to the big leagues on Wednesday, September 10, 2025, to bolster Boston's bullpen. This move signals the team's intent to strengthen their pitching roster as they push towards the end of the season and the playoffs. Prior to his promotion, Harrison had spent the 2025 season with Triple-A Worcester after appearing in 39 Major League games, where he posted a career record of 9-9 with a 4.48 ERA. His minor league performance included 12 starts in which he struck out 50 batters over 50.1 innings. The Red Sox management views Harrison as a potential key contributor out of the bullpen, utilizing his experience and skills to support the starting pitchers during critical games. In his debut with the Red Sox, Harrison made a significant impact by throwing three scoreless innings in a game against the Oakland Athletics. The manager, Alex Cora, indicated the flexibility Harrison offers in the pitching lineup, as he could also step into a starting role if needed. This adaptability is crucial for the Red Sox as they navigate the tight schedule and assess their pitchers' endurance heading into the postseason. As the season progresses, young pitchers like Payton Tolle and Connelly Early are competing for spots, but Harrison’s experience provides an edge. The Red Sox, with aspirations of contending for a playoff spot, have multiple options available for their pitching rotation and bullpen, making it an intriguing period as they evaluate their roster in preparation for October.