The Red Sox recalled Bernardino from Triple-A Worcester on Wednesday, Ian Browne of MLB.com reports.
Bernardino was just sent down to the minors over the weekend but is back to absorb the roster spot of Cam Booser (elbow), who was placed on the injured list. The 32-year-old has pitched well for most of the season for the Red Sox but had struggled of late before being optioned with a 12.54 ERA over his last 12 appearances.