Matt Cain will have his Monday start skipped due to a sore hamstring.

Cain cut his Saturday bullpen session and threw only 15 pitches before his hamstring started to act up on him. He's in no shape to pitch Monday which is a shame considering his strong numbers against the Cubs. The Giants are still hoping that he won't need a DL stint, but they may have no choice. Cain will likely head for an MRI and once they have the results from that, they can formulate a game plan. Yusmiero Petit will take the start in his place.ANALYST: Howard Bender