Christian McCaffrey injures knee, will not return vs. Bills
11:30 p.m. update: 49ers coach Kyle Shanahan says in postgame press conference that McCaffrey suffered a potentially season-ending PCL injury. 9:50 p.m. update: The 49ers announced McCaffrey won’t return during the game due to the knee injury. 9:05 p.m. update: The 49ers have announced McCaffrey is questionable to return due...