Wood (hamstring) was placed on the 15-day injured list Wednesday, Evan Webeck of The San Jose Mercury News reports.
Wood exited his start Tuesday versus the Marlins in the third inning after he sustained a left hamstring strain and he will now be unavailable for at least 15 days while he nurses the issue. In his place, Tristan Beck was called up from Triple-A Sacramento and will replace Wood on the Giants' major-league roster for the time being.