The Red Sox are expected to recall Gamboa from Triple-A Worcester on Wednesday, Chris Cotillo of MassLive.com reports.
Gamboa has fired 1.2 scoreless frames across his two MLB appearances this season, and he's given up just two runs in 10 Triple-A innings since the beginning of June. He'll provide Boston's bullpen with a fresh arm and will likely be limited to low-leverage work with the Red Sox.