Giants' Jeff Samardzija: Could miss a month

Samardzija (pectoral) is expected to be out three-to-four weeks, Henry Schulman of the San Francisco Chronicle reports.

Samardzija was shut down from throwing for a week after undergoing an MRI on Thursday which revealed a strained pectoral. The Giants' pitching staff will start the season severely short-handed with ace Madison Bumgarner also out indefinitely with a fractured left hand. Samardzija's status should be updated further once he begins throwing again next week.