Cain will take the ball on turn Friday in San Diego, NBC Sports Bay Area's Alex Pavlovic reports.

EDGE Analysis

There was talk that the Giants could give Madison Bumgarner the ball Friday and take advantage of Monday's off day, but Cain will make the fifth start of the year despite being easily the worst starter in the rotation. He will face Luis Perdomo in what has the potential to be a pretty high-scoring game. The one shining light is that he will face a Padres offense that is pretty terrible on paper.