Alex Boone sprains MCL, might be done as a 49er

In a lost season that has already seen them bench their franchise quarterback, the 49ers may now have seen the last of one of his best blockers. According to Matt Maiocco of CSNBayArea.com, 49ers guard Alex Boone is likely out the rest of the season with a sprained MCL. Boone doesn’t need surgery, but with…