During this past week’s win over the Bills, San Francisco 49ers quarterback Alex Smith suffered a sprained middle finger after getting hit by Mario Williams in the fourth quarter.49ers head coach Him Harbaugh told the media that he’s concerned about Smith’s finger.“It’s very much of a concern,” Harbaugh said, per the San Francisco Chronicle. “We’ll see how it is. Alex, it’s well-documented how tough he is. He talks about it not being a big deal. So we’ll see.”I expect Smith to be ready for Sunday’s big game against the Giants. But if he can’t go, Colin Kaepernick will likely get the start.