Rafaela is not in the lineup for Saturday's game against the Mariners, Chris Cotillo of MassLive.com reports.
Nate Eaton will start in center field and bat ninth against right-hander Emerson Hancock as Rafaela gets a rare night off. Rafaela has been a bright spot for the Red Sox this season and is slashing .300/.341/.494 over 42 games since the beginning of May.