Update: The Giants have confirmed that Sandoval suffered a broken hamate bone in his left hand, Henry Schulman of the San Francisco Chronicle reports.
Recommendation: A return timetable for Sandoval has not been established, but a similar injury to his right hand last season cost him six weeks and 41 games. Conor Gllaspie, who will be recalled to take Sandoval's place on the roster, figures to get the first shot at filling the starting third base job in Sandoval's absence.