I can understand why it might be particularly hard for any 49ers player to admit that they need to be placed on injury reserve when they literally have a teammate who was shot in the chest and came back a week later eager to play again. But we need CMC more in the playoffs than we need him in Weeks 1-4 so resting up and coming back pain-free is the sensible way to go. I suppose any time you take the field in the NFL a season-ending injury is a possibility but it's a lot harder to accept them when they come if there's also a "we should have known better" clause appended to the end.