Sandoval (biceps) is an option to replace Connelly Early (elbow) in Boston's rotation, Jen McCaffrey of The Athletic reports.
Red Sox interim manager Chad Tracy mentioned Sandoval or Brayan Bello as potential fill-ins for Early, who was placed on the 15-day injured list Wednesday with left elbow inflammation. Sandoval, whose rehab assignment ends Saturday, will make one more start at Double-A Portland this weekend and is scheduled to throw around 70 pitches. With a scheduled day off coming Monday, however, Boston won't need a fifth starter until July 11.