The NFL has issued another strong warning to coaches who won't wear masks on the sideline during games, threatening suspensions and forfeiture of draft picks as punishment for failing to comply with COVID-19 game-day protocols, according to a league memo obtained Wednesday by ESPN's Adam Schefter.

The strongly worded memo, sent to coaches, general managers and team executives, includes a passage in which the NFL says it will "address lack of compliance with accountability measures that may include ... suspensions and/or forfeiture of draft picks."