Madison Bumgarner won't need surgery, likely out 2 months

SAN FRANCISCO -- Giants ace left-hander Madison Bumgarner will not require surgery on his sprained pitching shoulder and is scheduled to begin light rehabilitation activities in four or five days.

The 2014 World Series MVP bruised ribs and sprained the AC joint in his pitching shoulder in a dirt bike accident during last Thursday's off day in Colorado. He is wearing a sling on his pitching arm for at least another week.

Giants left-hander Madison Bumgarner had an MRI that confirmed he won't need surgery on his sprained pitching shoulder.Bumgarner underwent a follow-up MRI exam Monday night that showed what the Giants already thought: no structural damage to the shoulder. Manager Bruce Bochy…