Two days after Jonathan Herrera had his moment in the sun -- delivering a walkoff win with a bat-shattering single to right-center field -- the Red Sox sent the backup infielder to Triple-A in order to make room on the active roster for Mike Carp, whose fractured right foot has kept him out since May 31.
Acquired from Colorado in exchange for Franklin Morales during the offseason, Herrera has struggled to carve out a role for himself this season, and had started only once since June 22 before being demoted. After hitting .292 for the Rockies last season, he came to Boston to be a primary part of the Red Sox' bench, but he hit just .233 in 104 plate appearances.
The emergence and positional versatility of Brock Holt, plus the organizational ascension of Mookie Betts and the reacquisition of Stephen Drew, combined with Herrera's lack of production to make him expendable.
Carp wasn't quite tearing the cover off the ball himself, in the midst of an 0-for-15 slide when he was sent to the DL. His injury was said to be the result of getting hit with a pitch on May 27, so he may have played parts of four games with the ailment, going 0-for-6, and dropping his average to .214 (accompanied by a .603 OPS) on the season.
He soon after went into a walking boot, then began a rehab assignment in Pawtucket on May 27. He went 5-for-22 in seven games with the PawSox, including a double, a homer, and three RBIs. He is not in the lineup Monday, and has started only 17 of the 33 games he's played -- but if his playing time increases, it could suggest the Sox are attempting to showcase Carp for teams looking to trade for a major league-ready first baseman, left fielder, or bat off the bench.