It happened early in last Sunday's game against Green Bay. Detroit Lions center Frank Ragnow came up to Matthew Stafford on the bench, nearly hoarse, and told the quarterback he'd need to handle making the line calls the rest of the day.
At the time, backup quarterback Chase Daniel thought it was pretty funny, a center who couldn't talk, but it turns out Ragnow had suffered a serious injury, a fractured throat.
The injury was first reported by the NFL Network on Wednesday and confirmed by multiple teammates and members of the coach staff that afternoon.
Amazingly, Ragnow didn't leave the game, keeping his streak of playing every offensive snap this season intact.