BOSTON, MA — The Boston Red Sox today acquired infielder Tristan Gray from the Tampa Bay Rays, in exchange for minor league right-handed pitcher Luis Guerrero. To make room for Gray on the 40-man roster, Boston designated first baseman Nathaniel Lowe for assignment.
Gray, 29, played in 30 games for the Rays during 2025, batting .231 (18-for-78) with five doubles, three home runs, and nine RBI while making nine starts at second base, seven at shortstop, three at third base, and one at first base. The left-handed hitter also played in 72 games for Triple-A Charlotte, hitting .270 (67-for-248) with an .805 OPS. Originally selected by the Pittsburgh Pirates in the 13th round of the 2017 First-Year Player Draft, the Texas native has played in 47 career Major League games with the Rays (2023, 2025), Miami Marlins (2024), and Athletics (2024).
Guerrero, 25, posted a 4.15 ERA (8 ER/17.1 IP) in 13 games for the Red Sox during 2025. The right-hander also recorded a 4.39 ERA (13 ER/26.2 IP) in 21 games with Triple-A Worcester. Selected by Boston in the 17th round of the 2021 First-Year Player Draft, the Dominican Republic native owns a 2.63 ERA (8 ER/27.1 IP) in 22 career Major League games, all with the Red Sox (2024-25).
Lowe, 30, batted .280 (28-for-100) with a .790 OPS in 34 games with the Red Sox during 2025, making 26 starts at first base and one as the designated hitter. The left-handed hitter also hit .216 (95-for-440) in 119 games for the Washington Nationals. Selected by Tampa Bay in the 13th round of the 2016 First-Year Player Draft, the Virginia native has batted .264 (796-for-3,018) in 839 career Major League games with the Rays (2019-20), Texas Rangers (2021-24), Nationals (2025), and Red Sox (2025).