In an attempt to increase player safety, the NFL announced that its ownership voted to eliminate blindside blocks, starting in the 2019 season.

According to language in a video posted to the Twitter account of the NFL Football Operations staff, a blindside block “is a foul if a player initiates a block in which he is moving toward or parallel to his own end line and makes forcible contact to his opponent with his helmet, forearm, or shoulder.”

Previously, it had been a penalty to use a blindside block only if it was targeted to the head or neck area.

The play is common in kick and punt returns, as well as turnovers and end around plays in which there is a change of direction leading to pursuit of a ball-carrier.