The Rockies traded infielder Jonathan Herrera to the Red Sox in exchange for reliever Franklin Morales and minor league reliever Christopher Martin, according to MLB.com.
Herrera hit .292 in 81 games for the Rockies in 2013, playing mostly in a utility role.
Morales made 19 relief appearances and one start for the Red Sox, and he recorded a 2-2 record and a 4.62 ERA. Martin went 3-3 with a 3.18 ERA and two saves at Triple-A Pawtucket.