Christian McCaffrey Has PCL Injury, Could Be Season-Ending

49ers HC Kyle Shanahan said after Sunday night's loss to the Bills that RB Christian McCaffrey has a PCL injury that could be season-ending. McCaffrey will likely undergo additional testing on Monday to get a better look at the damage. We should get another update on his status over the next 24 hours. McCaffrey's absence would leave Jordan Mason as San Francisco's lead back once again. He out-carried RB Isaac Guerendo 13 to four in Buffalo. Mason, who's rostered in only 37% of Sleeper leagues, is the top target on waiver wires this week.