The Red Sox announced that they have called up Mexican right-hander Héctor Velázquez from Triple-A Pawtucket. To create space for Velázquez in the roster of 25 players, the club sent infielder Deven Marrero to that branch.
Velázquez, 28, is 4-1 with a 1.29 ERA and average against .189 in nine starts for Pawtucket this season.
The Sonoran, whom the Patirrojos acquired from the Campeche Pirates of the Mexican Baseball League in February, made his Major League debut on May 18 in Oakland and charged the loss by allowing six earned runs in five innings of work.
Marrero, 26, leads .157 with three doubles and three homers in 33 games for the Boston team this year.