While the code words help disguise what the Lions are running on a play-by-play basis, teams can identify tells and tendencies simply by watchng the tape. As a result, Campbell knows that a lot of what the team likes to do is not a secret.

Lions RB Jahmyr GIbbs posted a picture on social media of teammate Jermar Jefferson that included more than a dozen of the team's protection calls

Lions head coach Dan Campbell not at all worried about Jahmyr Gibbs inadvertently leaking Detroit’s OL calls in a social media post

Detroit Lions head coach Dan Campbell appeared to at least slightly reverse course on Monday, declaring that he didn't consider running back Jahmyr Gibbs accidentally leaking some

Gibbs, 22, accidentally revealed Detroit's protections, visible on a whiteboard at the team facility, in a Snapchat video.

Detroit Lions head coach Dan Campbell finally provided his full thoughts on his running back, Jahmyr Gibbs, accidentally leaking sensitive team information via a post on social media. Campbell didn't mince words about it and made his stance very clear.