SANTA CLARA, Calif. -- San Francisco 49ers linebacker Dre Greenlaw has been suspended for one game without pay as discipline for unsportsmanlike conduct in Sunday's win against the Seattle Seahawks.
With 6:30 left in the first half of that game, Greenlaw hit Seattle quarterback Sam Darnold late and out of bounds, then was involved in a skirmish with Seahawks linebacker Ernest Jones IV in which he head-butted Jones, who was not wearing a helmet.
According to a statement from the league, Greenlaw violated Rule 12, Section 3, Article 1 of the league's rules which applies to "any act which is contrary to the generally understood principles of sportsmanship."
Barring a successful appeal, Greenlaw will have to miss the Oct. 19 game against the Washington Commanders and would be eligible to return to the active roster on Tuesday, Oct. 20.
Greenlaw is appealing the suspension, sources told ESPN.